/*
     FILE ARCHIVED ON 21:59:02 Jan 16, 2009 AND RETRIEVED FROM THE
     AN OPENWAYBACK INSTANCE ON 23:27:10 Apr 28, 2024.
     JAVASCRIPT APPENDED BY OPENWAYBACK, COPYRIGHT INTERNET ARCHIVE.

     ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C.
     SECTION 108(a)(3)).
*/
/*----------------------------------------------------------------------------\

|                               Help Tip 1.12                                 |

|-----------------------------------------------------------------------------|

|                         Created by Erik Arvidsson                           |

|                  (https://webarchive.library.unt.edu/eot2008/20090116215902/http://webfx.eae.net/contact.html#erik)                   |

|                      For WebFX (https://webarchive.library.unt.edu/eot2008/20090116215902/http://webfx.eae.net/)                      |

|-----------------------------------------------------------------------------|

|           A tool tip like script that can be used for context help          |

|-----------------------------------------------------------------------------|

|                  Copyright (c) 1999 - 2002 Erik Arvidsson                   |

|-----------------------------------------------------------------------------|

| This software is provided "as is", without warranty of any kind, express or |

| implied, including  but not limited  to the warranties of  merchantability, |

| fitness for a particular purpose and noninfringement. In no event shall the |

| authors or  copyright  holders be  liable for any claim,  damages or  other |

| liability, whether  in an  action of  contract, tort  or otherwise, arising |

| from,  out of  or in  connection with  the software or  the  use  or  other |

| dealings in the software.                                                   |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| This  software is  available under the  three different licenses  mentioned |

| below.  To use this software you must chose, and qualify, for one of those. |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| The WebFX Non-Commercial License          https://webarchive.library.unt.edu/eot2008/20090116215902/http://webfx.eae.net/license.html |

| Permits  anyone the right to use the  software in a  non-commercial context |

| free of charge.                                                             |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| The WebFX Commercial license           https://webarchive.library.unt.edu/eot2008/20090116215902/http://webfx.eae.net/commercial.html |

| Permits the  license holder the right to use  the software in a  commercial |

| context. Such license must be specifically obtained, however it's valid for |

| any number of  implementations of the licensed software.                    |

| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |

| GPL - The GNU General Public License    https://webarchive.library.unt.edu/eot2008/20090116215902/http://www.gnu.org/licenses/gpl.txt |

| Permits anyone the right to use and modify the software without limitations |

| as long as proper  credits are given  and the original  and modified source |

| code are included. Requires  that the final product, software derivate from |

| the original  source or any  software  utilizing a GPL  component, such  as |

| this, is also licensed under the GPL license.                               |

|-----------------------------------------------------------------------------|

| 2002-09-27 |                                                                |

| 2001-11-25 | Added a resize to the tooltip if the document width is too     |

|            | small.                                                         |

| 2002-05-19 | IE50 did not recognise the JS keyword undefined so the test    |

|            | for scroll support was updated to be IE50 friendly.            |

| 2002-07-06 | Added flag to hide selects for IE                              |

| 2002-10-04 | (1.1) Restructured and made code more IE garbage collector     |

|            | friendly. This solved the most nasty memory leaks. Also added  |

|            | support for hiding the tooltip if ESC is pressed.              |

| 2002-10-18 | Fixed verrical position in case of scrolled document.          |

| 2002-12-02 | Mozilla bug workaround related to mousedown and move.          |

|-----------------------------------------------------------------------------|

| Dependencies: helptip.css (To set up the CSS of the help-tooltip class)     |

|-----------------------------------------------------------------------------|

| Usage:                                                                      |

|                                                                             |

|   <script type="text/javascript" src="helptip.js">< /script>                |

|   <link type="text/css" rel="StyleSheet" href="helptip.css" />              |

|                                                                             |

|   <a class="helpLink" href="?" onclick="showHelp(event, 'String to show');  |

|      return false">Help</a>                                                 |

|-----------------------------------------------------------------------------|

| Created 2001-09-27 | All changes are in the log above. | Updated 2002-12-02 |

\----------------------------------------------------------------------------*/



function showHelpTip(e, sHtml, bHideSelects) {



	// find anchor element

	var el = e.target || e.srcElement;

	while (el.tagName != "A")

		el = el.parentNode;

	

	// is there already a tooltip? If so, remove it

	if (el._helpTip) {

		helpTipHandler.hideHelpTip(el);

	}



	helpTipHandler.hideSelects = Boolean(bHideSelects);



	// create element and insert last into the body

	helpTipHandler.createHelpTip(el, sHtml);

	

	// position tooltip

	helpTipHandler.positionToolTip(e);



	// add a listener to the blur event.

	// When blurred remove tooltip and restore anchor

	el.onblur = helpTipHandler.anchorBlur;

	el.onkeydown = helpTipHandler.anchorKeyDown; 
}



var helpTipHandler = {

	hideSelects:	false,

	

	helpTip:		null,

	

	showSelects:	function (bVisible) {

		if (!this.hideSelects) return;

		// only IE actually do something in here

		var selects = [];

		if (document.all)

			selects = document.all.tags("SELECT");

		var l = selects.length;

		for	(var i = 0; i < l; i++)

			selects[i].runtimeStyle.visibility = bVisible ? "" : "hidden";	

	},

	

	create:	function () {

		var d = document.createElement("DIV");

		d.className = "help-tooltip";

		d.onmousedown = this.helpTipMouseDown;

		d.onmouseup = this.helpTipMouseUp;

		document.body.appendChild(d);		

		this.helpTip = d;

	},

	

	createHelpTip:	function (el, sHtml) {

		if (this.helpTip == null) {

			this.create();

		}



		var d = this.helpTip;

		d.innerHTML = sHtml;

		d._boundAnchor = el;

		el._helpTip = d;

		return d;

	},

	

	// Allow clicks on A elements inside tooltip

	helpTipMouseDown:	function (e) {

		var d = this;

		var el = d._boundAnchor;

		if (!e) e = event;

		var t = e.target || e.srcElement;

		while (t.tagName != "A" && t != d)

			t = t.parentNode;

		if (t == d) return;

		

		el._onblur = el.onblur;

		el.onblur = null;

	},

	

	helpTipMouseUp:	function () {

		var d = this;

		var el = d._boundAnchor;

		el.onblur = el._onblur;

		el._onblur = null;

		el.focus();

	},	

	

	anchorBlur:	function (e) {

		var el = this;

		helpTipHandler.hideHelpTip(el);

	},

	

	anchorKeyDown:	function (e) {
	
		if (!e) e = window.event

		if (e.keyCode == 27) {	// ESC

			helpTipHandler.hideHelpTip(this);

		}

	},

	

	removeHelpTip:	function (d) {

		d._boundAnchor = null;

		d.style.filter = "none";

		d.innerHTML = "";

		d.onmousedown = null;

		d.onmouseup = null;

		d.parentNode.removeChild(d);

		//d.style.display = "none";

	},

	

	hideHelpTip:	function (el) {

		var d = el._helpTip;

		/*	Mozilla (1.2+) starts a selection session when moved

			and this destroys the mouse events until reloaded

		d.style.top = -el.offsetHeight - 100 + "px";

		*/		

		

		d.style.visibility = "hidden";

		//d._boundAnchor = null;



		el.onblur = null;

		el._onblur = null;

		el._helpTip = null;

		el.onkeydown = null;

		

		this.showSelects(true);

	},

	

	positionToolTip:	function (e) {

		this.showSelects(false);		

		var scroll = this.getScroll();

		var d = this.helpTip;

		

		// width

		if (d.offsetWidth >= scroll.width)

			d.style.width = scroll.width - 10 + "px";

		else

			d.style.width = "";

		

		// left

		if (e.clientX > scroll.width - d.offsetWidth)

			d.style.left = scroll.width - d.offsetWidth + scroll.left + "px";

		else

			d.style.left = e.clientX - 2 + scroll.left + "px";

		

	 // top
	 if (e.pageX || e.pageY) 	
	 {
		  posx = e.pageX;
		  posy = e.pageY;
		  d.style.top = posy + "px"      
	 }
	 else if (e.clientX || e.clientY)
	 {		
		 if (e.clientY + d.offsetHeight + 18 < scroll.height)
     {
			 d.style.top = e.clientY + 18 + scroll.top + "px";
     }
		 else if (e.clientY - d.offsetHeight > 0)
     {
			 d.style.top = e.clientY + scroll.top - d.offsetHeight + "px";
		 }
		 else
     {
			 d.style.top = scroll.top + 5 + "px";
		 }
   }	

		d.style.visibility = "visible";

	},

	

	// returns the scroll left and top for the browser viewport.

	getScroll:	function () {

		if (document.all && typeof document.body.scrollTop != "undefined") {	// IE model

			var ieBox = document.compatMode != "CSS1Compat";

			var cont = ieBox ? document.body : document.documentElement;

			return {

				left:	cont.scrollLeft,

				top:	cont.scrollTop,

				width:	cont.clientWidth,

				height:	cont.clientHeight

			};

		}

		else {

			return {

				left:	window.pageXOffset,

				top:	window.pageYOffset,

				width:	window.innerWidth,

				height:	window.innerHeight

			};

		}

		

	}



};