var map = null;
var facility_tlo = null;
var airport_tlo = null;
var minor_airport_tlo = null;
var sua_tlo = null;
var moa_tlo = null;
var lltr_tlo = null;
var nmac_tlo = null;
var mac_tlo = null;

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=facilities';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    facility_tlo = new GTileLayerOverlay(tlayer);

                

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=airports';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    airport_tlo = new GTileLayerOverlay(tlayer);

                

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=minor_airports';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    minor_airport_tlo = new GTileLayerOverlay(tlayer);

                

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=suas';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    sua_tlo = new GTileLayerOverlay(tlayer);

                

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=moas';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    moa_tlo = new GTileLayerOverlay(tlayer);

                

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=mtrs';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    lltr_tlo = new GTileLayerOverlay(tlayer);

                

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=nmacs';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    nmac_tlo = new GTileLayerOverlay(tlayer);

                

                    var tlayer = new GTileLayer(
                    new GCopyrightCollection('MACROsystems'),0,17);
                    tlayer.getTileUrl = function(tile, zoom) {
                    return '/tiles/png/tile.ashx' + '?x=' + tile.x + '&y=' + tile.y + '&z=' + zoom + '&tt=macs';
                };

            
                    tlayer.getOpacity=function() {
                    return 1.0;
                };

            
                    tlayer.isPng=
                    function() {
                        return false;
                    };

                
                    mac_tlo = new GTileLayerOverlay(tlayer);

                

function ToggleFacilities(checkbox) {
                                //alert(checkbox.checked);
                                var b = map.getBounds();
                                var z = map.getZoom();
                                 
						var chkFacilities = document.getElementById("chkFacilities").checked; 
                        if (chkFacilities==true)
                        {
                            if (z > 5) 
                            {
                                map.removeOverlay(facility_tlo);
                                ShowFacilityMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(facility_tlo);
                                map.addOverlay(facility_tlo);                                        
                                for (var m = 0; m < facility_markers.length; m++)
                                    { 
                                        map.removeOverlay(facility_markers[m]); 
                                    }
                                    facility_markers = [];
                                    facility_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (facility_markers) 
                            {
                                for (var m = 0; m < facility_markers.length; m++)
                                { 
                                    map.removeOverlay(facility_markers[m]); 
                                }
                                facility_markers = [];
                                facility_guids = [];
                            }
                            map.removeOverlay(facility_tlo);
                            
                            
                        }

            
                }function ToggleAirports(checkbox) {
                                var b = map.getBounds();
                                var z = map.getZoom();
                             
                                 
						var chkAirports = document.getElementById("chkAirports").checked; 
                        if (chkAirports==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(airport_tlo);
                                ShowAirportMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(airport_tlo);
                                map.addOverlay(airport_tlo);                                        
                                for (var m = 0; m < airport_markers.length; m++)
                                    { 
                                        map.removeOverlay(airport_markers[m]); 
                                    }
                                    airport_markers = [];
                                    airport_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (airport_markers) 
                            {
                                for (var m = 0; m < airport_markers.length; m++)
                                { 
                                    map.removeOverlay(airport_markers[m]); 
                                }
                                airport_markers = [];
                                airport_guids = [];
                            }
                            map.removeOverlay(airport_tlo);
                            
                            
                        }

            
                }function ToggleMinorAirports(checkbox) {
                                //alert(checkbox.checked);
                                var b = map.getBounds();
                                var z = map.getZoom();
                                
                                 
						var chkMinorAirports = document.getElementById("chkMinorAirports").checked; 
                        if (chkMinorAirports==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(minor_airport_tlo);
                                ShowMinorAirportMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(minor_airport_tlo);
                                map.addOverlay(minor_airport_tlo);                                        
                                for (var m = 0; m < minor_airport_markers.length; m++)
                                    { 
                                        map.removeOverlay(minor_airport_markers[m]); 
                                    }
                                    minor_airport_markers = [];
                                    minor_airport_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (minor_airport_markers) 
                            {
                                for (var m = 0; m < minor_airport_markers.length; m++)
                                { 
                                    map.removeOverlay(minor_airport_markers[m]); 
                                }
                                minor_airport_markers = [];
                                minor_airport_guids = [];
                            }
                            map.removeOverlay(minor_airport_tlo);
                            
                            
                        }

            
                }function ToggleMOAs(checkbox) {
                                var b = map.getBounds();
                                var z = map.getZoom();

                                 
						var chkMOAs = document.getElementById("chkMOAs").checked; 
                        if (chkMOAs==true)
                        {
                            if (z > 7) 
                            {
                                map.removeOverlay(moa_tlo);
                                ShowMOAMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(moa_tlo);
                                map.addOverlay(moa_tlo);                                        
                                for (var m = 0; m < moa_markers.length; m++)
                                    { 
                                        map.removeOverlay(moa_markers[m]); 
                                    }
                                    moa_markers = [];
                                    moa_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (moa_markers) 
                            {
                                for (var m = 0; m < moa_markers.length; m++)
                                { 
                                    map.removeOverlay(moa_markers[m]); 
                                }
                                moa_markers = [];
                                moa_guids = [];
                            }
                            map.removeOverlay(moa_tlo);
                            
                            
                        }

            
								flashMoas();
                }function ToggleSUAs(checkbox) {
                                var b = map.getBounds();
                                var z = map.getZoom();

                                 
						var chkSUAs = document.getElementById("chkSUAs").checked; 
                        if (chkSUAs==true)
                        {
                            if (z > 7) 
                            {
                                map.removeOverlay(sua_tlo);
                                ShowSUAMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(sua_tlo);
                                map.addOverlay(sua_tlo);                                        
                                for (var m = 0; m < sua_markers.length; m++)
                                    { 
                                        map.removeOverlay(sua_markers[m]); 
                                    }
                                    sua_markers = [];
                                    sua_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (sua_markers) 
                            {
                                for (var m = 0; m < sua_markers.length; m++)
                                { 
                                    map.removeOverlay(sua_markers[m]); 
                                }
                                sua_markers = [];
                                sua_guids = [];
                            }
                            map.removeOverlay(sua_tlo);
                            
                            
                        }

                 
								flashMoas();
                }function ToggleLLTRs(checkbox) {
                                var b = map.getBounds();
                                var z = map.getZoom();

                                 
						var chkMTRs = document.getElementById("chkMTRs").checked; 
                        if (chkMTRs==true)
                        {
                            if (z > 7) 
                            {
                                map.removeOverlay(lltr_tlo);
                                ShowLLTRMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(lltr_tlo);
                                map.addOverlay(lltr_tlo);                                        
                                for (var m = 0; m < lltr_markers.length; m++)
                                    { 
                                        map.removeOverlay(lltr_markers[m]); 
                                    }
                                    lltr_markers = [];
                                    lltr_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (lltr_markers) 
                            {
                                for (var m = 0; m < lltr_markers.length; m++)
                                { 
                                    map.removeOverlay(lltr_markers[m]); 
                                }
                                lltr_markers = [];
                                lltr_guids = [];
                            }
                            map.removeOverlay(lltr_tlo);
                            
                            
                        }

            
                }function ToggleNMACs(checkbox) {
                                var b = map.getBounds();
                                var z = map.getZoom();

                                 
						var chkNMACs = document.getElementById("chkNMACs").checked; 
                        if (chkNMACs==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(nmac_tlo);
                                ShowNMACMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(nmac_tlo);
                                map.addOverlay(nmac_tlo);                                        
                                for (var m = 0; m < nmac_markers.length; m++)
                                    { 
                                        map.removeOverlay(nmac_markers[m]); 
                                    }
                                    nmac_markers = [];
                                    nmac_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (nmac_markers) 
                            {
                                for (var m = 0; m < nmac_markers.length; m++)
                                { 
                                    map.removeOverlay(nmac_markers[m]); 
                                }
                                nmac_markers = [];
                                nmac_guids = [];
                            }
                            map.removeOverlay(nmac_tlo);
                            
                            
                        }

            
                }function ToggleMACs(checkbox) {
                                var b = map.getBounds();
                                var z = map.getZoom();

                                 
						var chkMACs = document.getElementById("chkMACs").checked; 
                        if (chkMACs==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(mac_tlo);
                                ShowMACMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(mac_tlo);
                                map.addOverlay(mac_tlo);                                        
                                for (var m = 0; m < mac_markers.length; m++)
                                    { 
                                        map.removeOverlay(mac_markers[m]); 
                                    }
                                    mac_markers = [];
                                    mac_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (mac_markers) 
                            {
                                for (var m = 0; m < mac_markers.length; m++)
                                { 
                                    map.removeOverlay(mac_markers[m]); 
                                }
                                mac_markers = [];
                                mac_guids = [];
                            }
                            map.removeOverlay(mac_tlo);
                            
                            
                        }

            
                }
var markers = [];
var airport_markers = [];
var minor_airport_markers = [];
var facility_markers = [];
var moa_markers = [];
var sua_markers = [];
var lltr_markers = [];
var nmac_markers = [];
var mac_markers = [];
var airport_guids = [];
var minor_airport_guids = [];
var facility_guids = [];
var moa_guids = [];
var sua_guids = [];
var lltr_guids = [];
var nmac_guids = [];
var mac_guids = [];
var loader = null;

                    function GetGuid(sxml) {
                        var guid = sxml.getAttribute('guid');
                        return guid;
                    }

                

                    function AirportIsMajor(sxml) {
                        var bIsMajor = false;
                        var type = sxml.getAttribute('airfieldtype');
                        var airporttype = 'airport';
                        if (airporttype.toLowerCase() == type.toLowerCase())
                        { 
                            bIsMajor = true; 
                        }
                        return bIsMajor;
                    }

                

                    function AirportMarkerAlreadyExists(guid) {
                        var b_ret = false
                        if (!airport_guids[guid]) 
                        {
                            //airport_guids[guid] = guid;
                        }
                       else 
                        { 
                            b_ret = true; 
                        }
                        return b_ret;
                    }

                

                    function MinorAirportMarkerAlreadyExists(guid) {
                    var b_ret = false;
                    if (!minor_airport_guids[guid]) 
                    {
                        //minor_airport_guids[guid] = guid;
                    }
                    else 
                    { 
                        b_ret = true; 
                    }
                    return b_ret;
                }

                

                    function FacilityMarkerAlreadyExists(guid) {
                    var b_ret = false;
                    if (!facility_guids[guid]) 
                    {
                        //facility_guids[guid] = guid;
                    }
                    else 
                    { 
                        b_ret = true; 
                    }
                    return b_ret;
                }

                

                    function MOAMarkerAlreadyExists(guid) 
                    {
                        var b_ret = false;
                        if (!moa_guids[guid]) 
                        {
                            //moa_guids[guid] = guid;
                            // alert('in MOAMarkerAlreadyExistsFunction: ' + moa_markers[guid]);
                        }
                        else 
                        { 
                            b_ret = true; 
                        }

                        return b_ret;
                    }

                

                    function SUAMarkerAlreadyExists(guid) {
                    var b_ret = false;
                    if (!sua_guids[guid]) 
                    {
                        //sua_guids[guid] = guid;
                    }
                    else 
                    { 
                        b_ret = true; 
                    }
                    return b_ret;
                }

                

                    function LLTRMarkerAlreadyExists(guid) {
                    var b_ret = false;
                    if (!lltr_guids[guid]) 
                    {
                        //lltr_guids[guid] = guid;
                    }
                    else 
                    { 
                        b_ret = true; 
                    }
                    return b_ret;
                }

                

                    function NmacMarkerAlreadyExists(guid) {
                    var b_ret = false;
                    if (!nmac_guids[guid]) 
                    {
                        //nmac_guids[guid] = guid;
                    }
                    else 
                    { 
                        b_ret = true; 
                    }
                    return b_ret;
                }

                

                    function MacMarkerAlreadyExists(guid) {
                    var b_ret = false;
                    if (!mac_guids[guid]) 
                    {
                        //mac_guids[guid] = guid;
                    }
                    else 
                    { 
                        b_ret = true; 
                    }
                    return b_ret;
                }

                
function cleanupAirportMarkers()
                    {   
                        var b = map.getBounds();
                        var z = map.getZoom();
                        if (z <= 8)
                        {
                            if (airport_markers) {
                                for (var m = 0; m < airport_markers.length; m++)
                                { map.removeOverlay(airport_markers[m]); }
                                airport_markers = [];
                            }
                        }
                    }function cleanupMinorAirportMarkers()
                    {   
                        var b = map.getBounds();
                        var z = map.getZoom();
                        if (z <= 8)
                        {
                            if (minor_airport_markers) {
                                for (var m = 0; m < minor_airport_markers.length; m++)
                                { map.removeOverlay(minor_airport_markers[m]); }
                                minor_airport_markers = [];
                            }
                        }
                    }function cleanupFacilityMarkers()
                    {   
                        var b = map.getBounds();
                        var z = map.getZoom();
                        if (z <= 5)
                        {
                            if (facility_markers) {
                                for (var m = 0; m < facility_markers.length; m++)
                                { map.removeOverlay(facility_markers[m]); }
                                facility_markers = [];
                            }
                        }
                    }
                        function ShowFacilityMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/facility/xml.aspx' + qs;
                                GDownloadUrl(page,
                                function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var facilities = de.getElementsByTagName('facility');
                                        if (facilities) 
                                        {
                                            var facility = null;
                                            if (loader) 
                                            { 
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < facilities.length; i++) 
                                            {
                                                var facilityXML = facilities[i];
                                                var guid = GetGuid(facilityXML);
                                                if (false == FacilityMarkerAlreadyExists(guid)) 
                                                {
                                                    facility = new Facility(facilityXML, '');
                                                    if (null != facility) 
                                                    {
                                                        if(loader) 
                                                        {
                                                            loader.add(facility, facility.show, true); 
                                                        }
                                                    } // (null != facility)
                                                } // (false == FacilityMarkerAlreadyExists(guid))
                                            } // for
            
                                            if (loader) 
                                            { 
                                                loader.execute(); 
                                            }
                                        }  // if (facilities)
                                        else 
                                        {
                                            alert('No facilities found!');
                                        }
                                    }  // if (xmldoc)                                    
                                } // function
                );                                                                
                                
                        }
                    
                    
                        function ShowAirportMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/airport/xml.aspx' + qs;
                                GDownloadUrl(page,
                                function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var airports = de.getElementsByTagName('airport');
                                        if (airports) 
                                        {
                                            var airport = null;
                                            if (loader) 
                                            { 
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < airports.length; i++) 
                                            {
                                                var airportXML = airports[i];   
                                                var bIsMajor = AirportIsMajor(airportXML);
                                                if (true == bIsMajor) 
                                                {
                                                    var guid = GetGuid(airportXML);
                                                    if (false == AirportMarkerAlreadyExists(guid)) 
                                                    {
                                                        airport = new Airport(airportXML, '');
                                                        if (null != airport) 
                                                        {
                                                            if(loader)
                                                            {
                                                                loader.add(airport, airport.show, true); 
                                                            }
                                                        } // if (null != airport) 
                                                    } // if (false == AirportMarkerAlreadyExists(guid)) 
                                                } // if (false == bIsMajor)
                                            } // for
                                            if (loader) 
                                            { 
                                                loader.execute(); 
                                            }
                                        } // if (airports)
                                        else
                                        { 
                                            alert('No airports found!'); 
                                        }
                                    } // if xmldoc
                                
                                }//end function
                );                                                                
                                
                        }
                    
                    
                        function ShowMinorAirportMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/airport/xml.aspx' + qs;
                                GDownloadUrl(page,
                                function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var airports = de.getElementsByTagName('airport');
                                        if (airports) 
                                        {
                                            var airport = null;
                                            if (loader) 
                                            {
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < airports.length; i++) 
                                            {
                                                var airportXML = airports[i];
                                                var bIsMajor = AirportIsMajor(airportXML);
                                                if (false == bIsMajor)
                                                {
                                                    var guid = GetGuid(airportXML);
                                                    if (false == MinorAirportMarkerAlreadyExists(guid)) 
                                                    {
                                                        airport = new Airport(airportXML, '');
                                                        if (null != airport) 
                                                        {
                                                            if( loader && false == bIsMajor) 
                                                            { 
                                                                loader.add(airport, airport.show, true); 
                                                            }
                                                        } // if (null != airport)
                                                    } // if (false == AirportMarkerAlreadyExists(guid))
            
                                                } // if (false == bIsMajor)
                                            }
                                            if (loader) 
                                            { 
                                                loader.execute(); 
                                            }
                                        }
                                        else 
                                        { 
                                            alert('No airports found!'); 
                                        }
                                    }//end xmldoc
                                    
                                }//end function
                );                                                                
                                
                        }
                    
                    
                        function ShowMOAMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/moa/xml.aspx' + qs;
                                GDownloadUrl(page,
                                function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var moas = de.getElementsByTagName('moa');
                                        if (moas) 
                                        {
                                            var moa = null;
                                            if (loader) 
                                            { 
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < moas.length; i++) 
                                            {
                                                var moaXML = moas[i];
                                                var guid = GetGuid(moaXML);
                                                if (false == MOAMarkerAlreadyExists(guid)) 
                                                {
                                                    moa = new Moa(moaXML, '');
                                                    if (null != moa) 
                                                    {
                                                        if (loader) 
                                                        {
                                                            loader.add(moa, moa.show, true); 
                                                        }
                                                    }
                                                }
                                            }
                                            if (loader) 
                                            {
                                                loader.execute(); 
                                            }
                                        }
                                        else 
                                        {
                                            alert('No moas found!'); 
                                        }
                                    }//end xmldoc
                                
                                }//end function
                );                                                                
                                
                        }
                    
                    
                        function ShowSUAMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/sua/xml.aspx' + qs;
                                GDownloadUrl(page,
                               function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var suas = de.getElementsByTagName('sua');
                                        if (suas) 
                                        {
                                            var sua = null;
                                            if (loader) 
                                            { 
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < suas.length; i++) 
                                            {
                                                var suaXML = suas[i];
                                                var guid = GetGuid(suaXML);
                                                if (false == SUAMarkerAlreadyExists(guid)) 
                                                {
                                                    sua = new Sua(suaXML, '');
                                                    if (null != sua) 
                                                    {
                                                        if(loader) 
                                                        {
                                                            loader.add(sua, sua.show, true); 
                                                        }
                                                    } // (null != sua)
                                                } // (false == SUAMarkerAlreadyExists(guid))
                                            } // for
            
                                            if (loader) 
                                            { 
                                                loader.execute(); 
                                            }
                                        }  // if (suas)
                                        else 
                                        {
                                            alert('No suas found!');
                                        }
                                    }  // if (xmldoc)
                                } // end function
                                
                );                                                                
                                
                        }
                    
                    
                        function ShowLLTRMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/lltr/xml.aspx' + qs;
                                GDownloadUrl(page,
                                function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);        
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var lltrs = de.getElementsByTagName('lltr');
                                        if (lltrs) 
                                        {
                                            var lltr = null;
                                            if (loader) 
                                            { 
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < lltrs.length; i++) 
                                            {
                                                var lltrXML = lltrs[i];
                                                var guid = GetGuid(lltrXML);

                                                //must create a new object for each lltr coordinate set
                                                for (var c=0;c < lltrXML.getElementsByTagName('coordinates').length;c++)
                                                {
                                                    guid += '-' + c;
                                                    if (false == LLTRMarkerAlreadyExists(guid)) 
                                                    {
                                                        lltr = new Lltr(lltrXML, c, '');
                                                        if (null != lltr) 
                                                        {
                                                            if(loader) 
                                                            { 
                                                                loader.add(lltr, lltr.show, true); 
                                                            }
                                                        }
                                                    }
                                                }
                                            }
                                            if (loader)
                                            {
                                                loader.execute(); 
                                            }
                                        }
                                        else
                                        { 
                                            alert('No lltrs found!'); 
                                        }
                                    }//end xmldoc
                                    
                                }//end function
                        
                );                                                                
                                
                        }
                    
                    
                        function ShowNMACMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/nmac/xml.aspx' + qs;
                                GDownloadUrl(page,
                                function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var nmacs = de.getElementsByTagName('nmac');
                                        if (nmacs) 
                                        {
                                            var nmac = null;
                                            if (loader) 
                                            { 
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < nmacs.length; i++) 
                                            {
                                                var nmacXML = nmacs[i];
                                                var guid = GetGuid(nmacXML);
                                                if (false == NmacMarkerAlreadyExists(guid)) 
                                                {
                                                    nmac = new Nmac(nmacXML, '');
                                                    if (null != nmac) 
                                                    {
                                                        if(loader) 
                                                        {
                                                            loader.add(nmac, nmac.show, true); 
                                                        }
                                                    } // (null != namc)
                                                } // (false == NmacMarkerAlreadyExists(guid))
                                            } // for
            
                                            if (loader) 
                                            { 
                                                loader.execute(); 
                                            }
                                        }  // if (nmacs)
                                        else 
                                        {
                                            alert('No nmacs found!');
                                        }
                                    }  // if (xmldoc)                                    
                                } // function
                );                                                                
                                
                        }
                    
                    
                        function ShowMACMarkers(b)
                        {                        
                            
                                var sw = b.getSouthWest();
                                var ne = b.getNorthEast();
                                var lat0 = sw.lat();
                                var lng1 = ne.lng();
                                var lat1 = ne.lat();
                                var lng0 = sw.lng();
                                var qs = "?lat0=" + lat0 + "&lat1=" + lat1 + "&lng0=" + lng0 + "&lng1=" + lng1;
                                var page = '/xml/mac/xml.aspx' + qs;
                                GDownloadUrl(page,
                                function(data, responseCode)
                                {
                                    
                                    var xmldoc = GXml.parse(data);
                                    if (xmldoc) 
                                    {
                                        var de = xmldoc.documentElement;
                                        var macs = de.getElementsByTagName('mac');
                                        if (macs)
                                        {
                                            var mac = null;
                                            if (loader) 
                                            { 
                                                loader.show('Displaying markers...', true); 
                                            }
                                            for (var i = 0; i < macs.length; i++) 
                                            {
                                                var macXML = macs[i];
                                                var guid = GetGuid(macXML);
                                                if (false == MacMarkerAlreadyExists(guid)) 
                                                {
                                                    mac = new Mac(macXML, '');
                                                    if (null != mac) 
                                                    {
                                                        if(loader) 
                                                        {
                                                            loader.add(mac, mac.show, true); 
                                                        }
                                                    } // (null != amc)
                                                } // (false == MacMarkerAlreadyExists(guid))
                                            } // for
            
                                            if (loader) 
                                            { 
                                                loader.execute(); 
                                            }
                                        }  // if (macs)
                                        else 
                                        {
                                            alert('No macs found!');
                                        }
                                    }  // if (xmldoc)                                    
                                } // function
                );                                                                
                                
                        }
                    
                    
                    GPolygon.prototype.Contains = function(point) 
                    {
                        
                        var j = 0;
                        var oddNodes = false;
                        var x = point.lng();
                        var y = point.lat();
                        for (var i=0; i < this.getVertexCount(); i++) 
                        {
                            j++;
                            if (j == this.getVertexCount()) 
                            {
                                j = 0;
                            }
                            if (((this.getVertex(i).lat() < y) && (this.getVertex(j).lat() >= y)) || ((this.getVertex(j).lat() < y) && (this.getVertex(i).lat() >= y))) 
                            {
                                if (    this.getVertex(i).lng() + (y - this.getVertex(i).lat())
                                    /  (this.getVertex(j).lat() - this.getVertex(i).lat())
                                    *  (this.getVertex(j).lng() - this.getVertex(i).lng()) < x ) 
                                {
                                    oddNodes = !oddNodes;
                                }
                            }
                        }
                        return oddNodes;
                    }

                    // === A method for testing if a point is inside a polyline
                    // === Add the GPolygon method to GPolyline
                    GPolyline.prototype.Contains = GPolygon.prototype.Contains;                    
                
                    GPolyline.prototype.Contains = function(pt)
                    {

                        var bcontains = false;
                        var closeness = 5;
	                    var zoom = map.getZoom();
	                    var ptPx = map.fromLatLngToDivPixel(pt);	                                            
                            
                        if (this.lltr.points.length > 1 )
                        {
                            //loop through each points
                            for (var i=1;i







<script type="text/javascript">
  var wmNotice = "UNT Web Archive - External links, forms, and search boxes may not function within this collection. Url: http://www.seeandavoid.org/scripts/gmaps/scripts.aspx?deferloading=true time: 14:45:00 Mar 06, 2013";
  var wmHideNotice = "hide";
  var contextRoot = "https://webarchive.library.unt.edu/web/";
</script>
<script type="text/javascript" src="https://webarchive.library.unt.edu/web/js/disclaim.js"></script>

<this.lltr.points.length;i++)
                            {
                                var gp1 = map.fromLatLngToDivPixel(this.lltr.points[i])
                                var gp2 = map.fromLatLngToDivPixel(this.lltr.points[i-1])

                                var dist = distanceToLine(gp2, gp1, ptPx);

                                // distance from ptPx to (infinite) line
                                // *******************************************
                                // check if close to line segment

                                if (dist >< closeness) 
                                {

                                    var dist2 = Math.pow(dist,2); // minimum distance^2 of pt to infinite line
                                    
                                    var rl2 = length2(gp1, gp2); // length^2 of line segment
                                    var ln2 = length2(gp1, ptPx); // distance^2 of pt to end line segment
                                    var lnm12 = length2(gp2, ptPx); // distance^2 of pt to begin line segment 
                                    var calcrl2 = ln2 - dist2 + lnm12 - dist2; 
                                    // calculated approximate (but useful) length^2 of line segment;

                                    // must be inside line segment
                                    if (calcrl2 <= rl2) 
                                    { 
                                        //map.openInfoWindowHtml(pt,'Polyline Clicked');

                                        bcontains = true;
                                        break;
                                    }; //end hit

                                }; // only check if close to infinite line
                            };//end for i
                        };//end if
                    
                       

                        return bcontains;
                    }; //function detectPolyClick

                    function length2(pt1, pt2) 
                    {
                         return Math.pow((pt1.y - pt2.y),2) + Math.pow((pt1.x - pt2.x),2);
                    }; // function to find distance (squared) between 2 pixels
                       
                    function distanceToLine(pt1, pt2, pt) 
                    {

                        //do extra check for NaN
                        
	                    if (pt1.x != pt2.x) 
	                    {
		                    var slope = (pt2.y - pt1.y) / (pt2.x - pt1.x);
                            var intercept =  pt2.y - slope * pt2.x;
		                    var dist = Math.abs(slope*pt.x + intercept - pt.y) / Math.sqrt(slope*slope+1);
                        }
                        else
                        {
                            var dist = Math.abs(pt.x - pt2.x); // vertical line
                        };
                        return dist;
                    }; // line defined by pt1,pt2 - distance(px) from pt to line
                               
                
                
function WheelZoom(a){ if (a.detail) // Firefox
{ if (a.detail < 0) { map.zoomIn(); }else if (a.detail > 0){ map.zoomOut(); }}else if (a.wheelDelta) // IE
{ if (a.wheelDelta > 0) { map.zoomIn(); }else if (a.wheelDelta < 0) { map.zoomOut(); }
event.cancelBubble = true;}}

                function AddLoadEvent(func)
                {
                    var oldonload = window.onload;
                    if (typeof window.onload != 'function')
                    {
                        window.onload = func;
                    }
                    else
                    {
                        window.onload = function() {
                            if (oldonload)
                            { 
                                oldonload(); 
                            }
                            func(); 
                        } 
                    } 
                }
AddLoadEvent(LoadMap);

function LoadMap() {
map = new GMap2(document.getElementById('home'));  
							 map.addMapType(G_PHYSICAL_MAP);                                                      
                            var currentCenter = map.getCenter();
var topRight = new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(10, 30));
map.addControl(new GLargeMapControl(), topRight);
map.addControl(new GMapTypeControl());
map.addControl(new GOverviewMapControl());
map.addControl(new GScaleControl());


                                    map.setCenter(new GLatLng(38.272, -98.8769));             
                                    map.setZoom(4);                                   
                                    map.setMapType(G_HYBRID_MAP);                                        
                    
                                var qs = new Querystring();
                                var code = qs.get('aic');
                                if (code != null)
                                {
                                    //var mb = map.getBounds();                    
                                    //ShowFacilityMarkers(mb);                               
                                    AutoShowAirport(code);
                                }                                
                    

map.addOverlay(facility_tlo);



                    map.enableContinuousZoom();
                    

                    map.enableDoubleClickZoom();
                    


                        // these listeners are to capture the mouse scroll wheel activity
GEvent.addDomListener(document.getElementById("home"), "DOMMouseScroll", WheelZoom); // Firefox
GEvent.addDomListener(document.getElementById("home"), "mousewheel", WheelZoom); // IE

GEvent.addListener(map, "mousemove", 
                            // this handles the mouse move
                            function(point)
                            {
                                if (point)
                                {
                                    var latLngStr6 = point.y.toFixed(6) + ', ' + point.x.toFixed(6);
                                    var intro = 'Current Mouse Position - Latitude/Longitude : ';
                                    var dmmp = document.getElementById('mymouseposition');
                                    if (dmmp)
                                    {
                                        dmmp.innerHTML = intro + latLngStr6;
                                    }
                                }
                            });
GEvent.addListener(map, "moveend", 
                    // this handles the move end
                    function()
                    {
                        targetMarker = null;    //clear target marker reference so checkforpopup does not fire
                        var b = map.getBounds();
                        var z = map.getZoom();

                        //Do check to see if really moved
                        if (currentCenter != map.getCenter()) 
                        { 
                            //alert(b.getSouthWest().lat() + ':' + b.getNorthEast().lat());
                            
                        var chkFacilities = document.getElementById("chkFacilities").checked;                        
                        if (chkFacilities==true)
                        {                            

                            if (z > 5)
                            {                              
                                ShowFacilityMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < facility_markers.length; m++)
                                { 
                                    map.removeOverlay(facility_markers[m]); 
                                }
                                facility_markers = [];
                                facility_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (facility_markers) 
                            {
                                for (var m = 0; m < facility_markers.length; m++)
                                { 
                                    map.removeOverlay(facility_markers[m]); 
                                }
                                facility_markers = [];
                                facility_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                
                        var chkMinorAirports = document.getElementById("chkMinorAirports").checked;                        
                        if (chkMinorAirports==true)
                        {                            

                            if (z > 8)
                            {                              
                                ShowMinorAirportMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < minor_airport_markers.length; m++)
                                { 
                                    map.removeOverlay(minor_airport_markers[m]); 
                                }
                                minor_airport_markers = [];
                                minor_airport_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (minor_airport_markers) 
                            {
                                for (var m = 0; m < minor_airport_markers.length; m++)
                                { 
                                    map.removeOverlay(minor_airport_markers[m]); 
                                }
                                minor_airport_markers = [];
                                minor_airport_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                
                        var chkAirports = document.getElementById("chkAirports").checked;                        
                        if (chkAirports==true)
                        {                            

                            if (z > 8)
                            {                              
                                ShowAirportMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < airport_markers.length; m++)
                                { 
                                    map.removeOverlay(airport_markers[m]); 
                                }
                                airport_markers = [];
                                airport_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (airport_markers) 
                            {
                                for (var m = 0; m < airport_markers.length; m++)
                                { 
                                    map.removeOverlay(airport_markers[m]); 
                                }
                                airport_markers = [];
                                airport_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                
                        var chkMOAs = document.getElementById("chkMOAs").checked;                        
                        if (chkMOAs==true)
                        {                            

                            if (z > 7)
                            {                              
                                ShowMOAMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < moa_markers.length; m++)
                                { 
                                    map.removeOverlay(moa_markers[m]); 
                                }
                                moa_markers = [];
                                moa_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (moa_markers) 
                            {
                                for (var m = 0; m < moa_markers.length; m++)
                                { 
                                    map.removeOverlay(moa_markers[m]); 
                                }
                                moa_markers = [];
                                moa_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                
                        var chkSUAs = document.getElementById("chkSUAs").checked;                        
                        if (chkSUAs==true)
                        {                            

                            if (z > 7)
                            {                              
                                ShowSUAMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < sua_markers.length; m++)
                                { 
                                    map.removeOverlay(sua_markers[m]); 
                                }
                                sua_markers = [];
                                sua_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (sua_markers) 
                            {
                                for (var m = 0; m < sua_markers.length; m++)
                                { 
                                    map.removeOverlay(sua_markers[m]); 
                                }
                                sua_markers = [];
                                sua_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                
                        var chkMTRs = document.getElementById("chkMTRs").checked;                        
                        if (chkMTRs==true)
                        {                            

                            if (z > 7)
                            {                              
                                ShowLLTRMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < lltr_markers.length; m++)
                                { 
                                    map.removeOverlay(lltr_markers[m]); 
                                }
                                lltr_markers = [];
                                lltr_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (lltr_markers) 
                            {
                                for (var m = 0; m < lltr_markers.length; m++)
                                { 
                                    map.removeOverlay(lltr_markers[m]); 
                                }
                                lltr_markers = [];
                                lltr_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                
                        var chkNMACs = document.getElementById("chkNMACs").checked;                        
                        if (chkNMACs==true)
                        {                            

                            if (z > 8)
                            {                              
                                ShowNMACMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < nmac_markers.length; m++)
                                { 
                                    map.removeOverlay(nmac_markers[m]); 
                                }
                                nmac_markers = [];
                                nmac_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (nmac_markers) 
                            {
                                for (var m = 0; m < nmac_markers.length; m++)
                                { 
                                    map.removeOverlay(nmac_markers[m]); 
                                }
                                nmac_markers = [];
                                nmac_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                
                        var chkMACs = document.getElementById("chkMACs").checked;                        
                        if (chkMACs==true)
                        {                            

                            if (z > 8)
                            {                              
                                ShowMACMarkers(b);
                            }
                            else
                            {
                                for (var m = 0; m < mac_markers.length; m++)
                                { 
                                    map.removeOverlay(mac_markers[m]); 
                                }
                                mac_markers = [];
                                mac_guids = [];
                                
                            }//end else above zoom level
                        }
                        else
                        {                            
                            //remove everything
                            if (mac_markers) 
                            {
                                for (var m = 0; m < mac_markers.length; m++)
                                { 
                                    map.removeOverlay(mac_markers[m]); 
                                }
                                mac_markers = [];
                                mac_guids = [];
                            }                                                        
                                                       
                        }//end if checked 

                

                            currentCenter = map.getCenter();
                        } //end dupe check 
                    } //end function

            );
GEvent.addListener(map, "zoomend", // this handles the zoomend
function(oldlevel,newlevel) 
                            {                                
                                var b = map.getBounds();
                                var z = map.getZoom(); 
                             
						var chkFacilities = document.getElementById("chkFacilities").checked; 
                        if (chkFacilities==true)
                        {
                            if (z > 5) 
                            {
                                map.removeOverlay(facility_tlo);
                                ShowFacilityMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(facility_tlo);
                                map.addOverlay(facility_tlo);                                        
                                for (var m = 0; m < facility_markers.length; m++)
                                    { 
                                        map.removeOverlay(facility_markers[m]); 
                                    }
                                    facility_markers = [];
                                    facility_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (facility_markers) 
                            {
                                for (var m = 0; m < facility_markers.length; m++)
                                { 
                                    map.removeOverlay(facility_markers[m]); 
                                }
                                facility_markers = [];
                                facility_guids = [];
                            }
                            map.removeOverlay(facility_tlo);
                            
                            
                        }

            
                             
						var chkAirports = document.getElementById("chkAirports").checked; 
                        if (chkAirports==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(airport_tlo);
                                ShowAirportMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(airport_tlo);
                                map.addOverlay(airport_tlo);                                        
                                for (var m = 0; m < airport_markers.length; m++)
                                    { 
                                        map.removeOverlay(airport_markers[m]); 
                                    }
                                    airport_markers = [];
                                    airport_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (airport_markers) 
                            {
                                for (var m = 0; m < airport_markers.length; m++)
                                { 
                                    map.removeOverlay(airport_markers[m]); 
                                }
                                airport_markers = [];
                                airport_guids = [];
                            }
                            map.removeOverlay(airport_tlo);
                            
                            
                        }

            
                             
						var chkMinorAirports = document.getElementById("chkMinorAirports").checked; 
                        if (chkMinorAirports==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(minor_airport_tlo);
                                ShowMinorAirportMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(minor_airport_tlo);
                                map.addOverlay(minor_airport_tlo);                                        
                                for (var m = 0; m < minor_airport_markers.length; m++)
                                    { 
                                        map.removeOverlay(minor_airport_markers[m]); 
                                    }
                                    minor_airport_markers = [];
                                    minor_airport_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (minor_airport_markers) 
                            {
                                for (var m = 0; m < minor_airport_markers.length; m++)
                                { 
                                    map.removeOverlay(minor_airport_markers[m]); 
                                }
                                minor_airport_markers = [];
                                minor_airport_guids = [];
                            }
                            map.removeOverlay(minor_airport_tlo);
                            
                            
                        }

            
                             
						var chkMOAs = document.getElementById("chkMOAs").checked; 
                        if (chkMOAs==true)
                        {
                            if (z > 7) 
                            {
                                map.removeOverlay(moa_tlo);
                                ShowMOAMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(moa_tlo);
                                map.addOverlay(moa_tlo);                                        
                                for (var m = 0; m < moa_markers.length; m++)
                                    { 
                                        map.removeOverlay(moa_markers[m]); 
                                    }
                                    moa_markers = [];
                                    moa_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (moa_markers) 
                            {
                                for (var m = 0; m < moa_markers.length; m++)
                                { 
                                    map.removeOverlay(moa_markers[m]); 
                                }
                                moa_markers = [];
                                moa_guids = [];
                            }
                            map.removeOverlay(moa_tlo);
                            
                            
                        }

            
                             
						var chkSUAs = document.getElementById("chkSUAs").checked; 
                        if (chkSUAs==true)
                        {
                            if (z > 7) 
                            {
                                map.removeOverlay(sua_tlo);
                                ShowSUAMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(sua_tlo);
                                map.addOverlay(sua_tlo);                                        
                                for (var m = 0; m < sua_markers.length; m++)
                                    { 
                                        map.removeOverlay(sua_markers[m]); 
                                    }
                                    sua_markers = [];
                                    sua_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (sua_markers) 
                            {
                                for (var m = 0; m < sua_markers.length; m++)
                                { 
                                    map.removeOverlay(sua_markers[m]); 
                                }
                                sua_markers = [];
                                sua_guids = [];
                            }
                            map.removeOverlay(sua_tlo);
                            
                            
                        }

            
                             
						var chkMTRs = document.getElementById("chkMTRs").checked; 
                        if (chkMTRs==true)
                        {
                            if (z > 7) 
                            {
                                map.removeOverlay(lltr_tlo);
                                ShowLLTRMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(lltr_tlo);
                                map.addOverlay(lltr_tlo);                                        
                                for (var m = 0; m < lltr_markers.length; m++)
                                    { 
                                        map.removeOverlay(lltr_markers[m]); 
                                    }
                                    lltr_markers = [];
                                    lltr_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (lltr_markers) 
                            {
                                for (var m = 0; m < lltr_markers.length; m++)
                                { 
                                    map.removeOverlay(lltr_markers[m]); 
                                }
                                lltr_markers = [];
                                lltr_guids = [];
                            }
                            map.removeOverlay(lltr_tlo);
                            
                            
                        }

            
                             
						var chkNMACs = document.getElementById("chkNMACs").checked; 
                        if (chkNMACs==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(nmac_tlo);
                                ShowNMACMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(nmac_tlo);
                                map.addOverlay(nmac_tlo);                                        
                                for (var m = 0; m < nmac_markers.length; m++)
                                    { 
                                        map.removeOverlay(nmac_markers[m]); 
                                    }
                                    nmac_markers = [];
                                    nmac_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (nmac_markers) 
                            {
                                for (var m = 0; m < nmac_markers.length; m++)
                                { 
                                    map.removeOverlay(nmac_markers[m]); 
                                }
                                nmac_markers = [];
                                nmac_guids = [];
                            }
                            map.removeOverlay(nmac_tlo);
                            
                            
                        }

            
                             
						var chkMACs = document.getElementById("chkMACs").checked; 
                        if (chkMACs==true)
                        {
                            if (z > 8) 
                            {
                                map.removeOverlay(mac_tlo);
                                ShowMACMarkers(b);
                            }
                            else
                            {
                                
                                map.removeOverlay(mac_tlo);
                                map.addOverlay(mac_tlo);                                        
                                for (var m = 0; m < mac_markers.length; m++)
                                    { 
                                        map.removeOverlay(mac_markers[m]); 
                                    }
                                    mac_markers = [];
                                    mac_guids = [];
                                
                            }
                        }
                        else
                        {
                            
                            if (mac_markers) 
                            {
                                for (var m = 0; m < mac_markers.length; m++)
                                { 
                                    map.removeOverlay(mac_markers[m]); 
                                }
                                mac_markers = [];
                                mac_guids = [];
                            }
                            map.removeOverlay(mac_tlo);
                            
                            
                        }

            
                            
                var zs = 'Current Zoom Level: ' + map.getZoom();
                var dmz = document.getElementById('myzoomlevel');
                if (dmz) 
                {
                    dmz.innerHTML = zs;
                }

                

                            }                               
                          );
GEvent.addListener(map, 'click', 
                    function(overlay, pt, point) 
                    {
						if (point)
                        {
							var info_tabs = new Array();
                            var hit = false;
                            var html = null;

							
                            html = '<div id=\'bubbleGeneralTab\'>';
                            
                            var chkMoa = document.getElementById("chkMOAs").checked; 		
							
                            
							if (chkMoa==true)
                            {
								//alert( moa_markers.length );
								
								for (var i=0; i < moa_markers.length; i++)
    	                        {                                
    		                        if (moa_markers[i].Contains(point))
    		                        {      
										
										hit = true;
    	                                
                                        html += '<b>MILITARY OPERATION AREA - ' + moa_markers[i].sua.code + '</b><br/>';                                    
                                        html += moa_markers[i].sua.loweralt + ' - ' + moa_markers[i].sua.upperalt + ', ' + moa_markers[i].sua.wx +'<br/>'; 
                                        html += moa_markers[i].sua.efftimes + '<br/>';
                                        html += moa_markers[i].sua.commname + ' ' + moa_markers[i].sua.freq1 + '/' + moa_markers[i].sua.freq2 + '<br/>';
										
										if( moa_markers[i].sua.airspaceStatus == 1 )
											html += '<div style=\'color:Red;font-weight:bold;\'>HOT ' + moa_markers[i].sua.startTime + ' - ' + moa_markers[i].sua.endTime + ' Z </div>' 
										else if( moa_markers[i].sua.airspaceStatus == 2 )
											html += '<div style=\'color:Red;font-weight:bold;\'>PENDING ' + moa_markers[i].sua.startTime + ' - ' + moa_markers[i].sua.endTime + ' Z </div>' 
										else if( moa_markers[i].sua.airspaceStatus == 3 )
											html += '<div style=\'color:Red;font-weight:bold;\'>WAITING TO START ' + moa_markers[i].sua.startTime + ' - ' + moa_markers[i].sua.endTime + ' Z </div>' 
										
                                        html += '<hr>'
                                        
    		                            //info_tabs.push(new GInfoWindowTab(moa_markers[i].sua.code, moa_markers[i].sua.code));
			                        }        	    
    	                        }
                            }

                            var chkSua = document.getElementById("chkSUAs").checked; 
                            if (chkSua==true)
                            {
                                for (var i=0; i < sua_markers.length; i++)
    	                        {                                
    		                        if (sua_markers[i].Contains(point))
    		                        {                                                                                                           
                                        hit = true;
    	                                
                                        html += '<b>SPECIAL USE AIRSPACE - ' + sua_markers[i].sua.code + '</b><br/>';                                    
                                        html += sua_markers[i].sua.loweralt + ' - ' + sua_markers[i].sua.upperalt + ', ' + sua_markers[i].sua.wx +'<br/>'; 
                                        html += sua_markers[i].sua.efftimes + '<br/>';
                                        html += sua_markers[i].sua.commname + ' ' + sua_markers[i].sua.freq1 + '/' + sua_markers[i].sua.freq2 + '<br/>';

										if( sua_markers[i].sua.airspaceStatus == 1 )
											html += '<div style=\'color:Red;font-weight:bold;\'>HOT ' + sua_markers[i].sua.startTime + ' - ' + sua_markers[i].sua.endTime + ' Z </div>' 
										else if( sua_markers[i].sua.airspaceStatus == 2 )
											html += '<div style=\'color:Red;font-weight:bold;\'>PENDING ' + sua_markers[i].sua.startTime + ' - ' + sua_markers[i].sua.endTime + ' Z </div>' 
										else if( sua_markers[i].sua.airspaceStatus == 3 )
											html += '<div style=\'color:Red;font-weight:bold;\'>WAITING TO START ' + sua_markers[i].sua.startTime + ' - ' + sua_markers[i].sua.endTime + ' Z </div>' 
										

                                        html += '<hr>'
                                        
    		                            //info_tabs.push(new GInfoWindowTab(sua_markers[i].sua.code, sua_markers[i].sua.code));
			                        }        	    
    	                        }
                            }

                            html += '</div>';

    	                    if (hit)
                            {
								           
								if( map.getInfoWindow() != null )
							    {
									if( map.getInfoWindow().getPoint() == point )
										hit = false;
								}

								if( hit )                         
   	                            map.openInfoWindowHtml(point, html);
                            }
                        }
                    }
                );GEvent.addListener(map, 'click', 
                    function(overlay, pt, point) 
                    {
						//alert ('polyline' );
                        if (point)
                        {    
                 
                            var hit = false;
                            var html = null;
                            var infoTabs = [];
                            var codes = [];
                            
                            //*********************************************************
                            //We must prototype the array.indexOf function here for IE browsers
                            //This prototype is provided by the Mozilla foundation and//is distributed under the MIT license.//http://www.ibiblio.org/pub/Linux/LICENSES/mit.license
                            if (!Array.prototype.indexOf)
                            {  
                                Array.prototype.indexOf = function(elt /*, from*/)
                                {    
                                    var len = this.length;    
                                    var from = Number(arguments[1]) || 0;    
                                    from = (from < 0) ? Math.ceil(from): Math.floor(from);    
                                    if (from < 0) 
                                        from += len;    
                                    for (; from < len; from++)    
                                    {      
                                        if (from in this && this[from] === elt) 
                                            return from;    
                                    }    
                                    return -1;  
                                };
                            }
                            //*********************************************************
							
							//alert( lltr_markers.length );

                            for (var i=0; i < lltr_markers.length; i++)
    	                    {                                                                
    		                    if (lltr_markers[i].Contains(point) )
    		                    {                                                                                                           
                                    hit = true;
	                                
                                    html = '<div id=\'bubbleGeneralTab\' style=\'width:500px\'>';
                                    html += '<b>MILITARY LOW ALTITUDE TRAINING ROUTE - ' + lltr_markers[i].lltr.code + '</b><br/>';
                                    html += 'Owner - ' + lltr_markers[i].lltr.owner + ' <br/>';                                                                        
                                    html += 'Effective: ' + lltr_markers[i].lltr.efftimes + '<br/>';                                                                        
                                    html += 'Route width - Up to ' + lltr_markers[i].lltr.maxwidth + ' NM<br/>';
                                    if (lltr_markers[i].lltr.aglaltitude != null && lltr_markers[i].lltr.aglaltitude != '')
                                    {
                                        html += 'Route varies ' + lltr_markers[i].lltr.aglaltitude + ' ';
                                        if (lltr_markers[i].lltr.mslaltitude != null && lltr_markers[i].lltr.mslaltitude != '' && lltr_markers[i].lltr.mslaltitude.indexOf('MSL') > -1)
                                        {
                                            html += '(' + lltr_markers[i].lltr.mslaltitude + ')<br/>';
                                        }                                        
                                    }
                                    else
                                    {
                                        if (lltr_markers[i].lltr.mslaltitude != null && lltr_markers[i].lltr.mslaltitude != '')
                                        {
                                            html += 'Route varies ' + lltr_markers[i].lltr.mslaltitude + ' <br/>';
                                        }
                                    }
                                    
                                    //check to see if lltr images are available
                                    if (lltr_markers[i].lltr.lltrimagesXMLElements != null && lltr_markers[i].lltr.lltrimagesXMLElements.length > 0)
                                    {    
                                        html += '<br /><br/><b>Low-Level Training Route Maps</b><br/>';                                    
                                        for(var l=0;l<lltr_markers[i].lltr.lltrimagesXMLElements.length;l++)
                                        {
                                            var thumb = lltr_markers[i].lltr.lltrimagesXMLElements[l].getAttribute('thumb');
                                            var guid = lltr_markers[i].lltr.lltrimagesXMLElements[l].getAttribute('guid');
                                            var displayfunction = 'displayImage(' + '\'ajax/popupdetail.aspx?t=0&id=' + guid + '\');';
                                            html += '<img src="' + thumb + '" onclick="' + displayfunction + '" >';
                                        }
                                                                                
                                 
                                    }
                                        
                                    html += '</div>';
                                    
                                    //check to see if it's in the codes array already to prevent multiple tabs of same item                                    
                                    if (codes != null && codes.indexOf(lltr_markers[i].lltr.code) == -1)

                                    {
                                        infoTabs.push(new GInfoWindowTab(lltr_markers[i].lltr.code, html));
                                        
                                        //add to the hit array
                                        codes.push(lltr_markers[i].lltr.code);
                                    }
			                    }        	    
    	                    }                            
                            
							/*
    	                    if (hit==true)
                            {                                        
   	                            map.openInfoWindowTabsHtml(point, infoTabs);
                            }
							*/
							if( hit )
							{
								if( map.getInfoWindow() != null )
									{
										if( map.getInfoWindow().getPoint() == point )
											hit = false;
									}

									if( hit )                         
   									map.openInfoWindowHtml(point, html);
							}
                        }
                    }
                );

                        var ele_loading = document.getElementById('loading');
                        var ele_loading_text = document.getElementById('loadingtext');
                        var ele_bar = document.getElementById('bar');
                        var ele_fill = document.getElementById('fill');
                        var ele_loading_button = document.getElementById('loadingbutton');
                        loader = new MLoader(map, ele_loading, ele_loading_text, ele_bar, ele_fill, ele_loading_button);

                    
                var zs = 'Current Zoom Level: ' + map.getZoom();
                var dmz = document.getElementById('myzoomlevel');
                if (dmz) 
                {
                    dmz.innerHTML = zs;
                }

                
}






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