/*
     FILE ARCHIVED ON 7:47:25 Nov 28, 2012 AND RETRIEVED FROM THE
     AN OPENWAYBACK INSTANCE ON 14:05:01 Jul 16, 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)).
*/
(function(e,h,l,c){e.fn.sonar=function(o,n){if(typeof o==="boolean"){n=o;o=c}return e.sonar(this[0],o,n)};var f=l.body,a="scrollin",m="scrollout",b=function(r,n,t){if(r){f||(f=l.body);var s=r,u=0,v=f.offsetHeight,o=h.innerHeight||l.documentElement.clientHeight||f.clientHeight||0,q=l.documentElement.scrollTop||h.pageYOffset||f.scrollTop||0,p=r.offsetHeight||0;if(!r.sonarElemTop||r.sonarBodyHeight!==v){if(s.offsetParent){do{u+=s.offsetTop}while(s=s.offsetParent)}r.sonarElemTop=u;r.sonarBodyHeight=v}n=n===c?0:n;return(!(r.sonarElemTop+(t?0:p)<q-n)&&!(r.sonarElemTop+(t?p:0)>q+o+n))}},d={},j=0,i=function(){setTimeout(function(){var s,o,t,q,p,r,n;for(t in d){o=d[t];for(r=0,n=o.length;r<n;r++){q=o[r];s=q.elem;p=b(s,q.px,q.full);if(t===m?!p:p){if(!q.tr){if(s[t]){e(s).trigger(t);q.tr=1}else{o.splice(r,1);r--;n--}}}else{q.tr=0}}}},25)},k=function(n,o){n[o]=0},g=function(r,p){var t=p.px,q=p.full,s=p.evt,o=b(r,t,q),n=0;r[s]=1;if(s===m?!o:o){setTimeout(function(){e(r).trigger(s===m?m:a)},0);n=1}d[s].push({elem:r,px:t,full:q,tr:n});if(!j){e(h).bind("scroll",i);j=1}};e.sonar=b;d[a]=[];e.event.special[a]={add:function(n){var p=n.data||{},o=this;if(!o[a]){g(this,{px:p.distance,full:p.full,evt:a})}},remove:function(n){k(this,a)}};d[m]=[];e.event.special[m]={add:function(n){var p=n.data||{},o=this;if(!o[m]){g(o,{px:p.distance,full:p.full,evt:m})}},remove:function(n){k(this,m)}}})(jQuery,window,document);