/** Code by www.labsmedia.com */
function catchClickHeat(e){
	try{
		showClickHeatDebug('Gathering click data...');
		if(clickHeatQuota==0){
			showClickHeatDebug('Click not logged: quota reached');
			return true;
		}
		if(clickHeatGroup==''){
			clickHeatGroup=0;
		}
		if(e==undefined){
			e=window.event;
			c=e.button;
			element=e.srcElement;
		}else{
			c=e.which;
			element=null;
		}
		if(c==0){
			showClickHeatDebug('Click not logged: no button pressed');
			return true;
		}
		if(element!=null&&element.tagName.toLowerCase()=='iframe'){
			if(element.sourceIndex==clickHeatLastIframe){
				showClickHeatDebug('Click not logged: same iframe (happens when a click on iframe occured opening a popup and popup is closed)');
				return true;
			}
			clickHeatLastIframe=element.sourceIndex;
		}else{
			clickHeatLastIframe=-1;
		}
		var x=e.clientX;
		var y=e.clientY;
		var w=clickHeatDocument.clientWidth!=undefined?clickHeatDocument.clientWidth:window.innerWidth;
		var h=clickHeatDocument.clientHeight!=undefined?clickHeatDocument.clientHeight:window.innerHeight;
		var scrollx=window.pageXOffset==undefined?clickHeatDocument.scrollLeft:window.pageXOffset;
		var scrolly=window.pageYOffset==undefined?clickHeatDocument.scrollTop:window.pageYOffset;
		if(x>w||y>h){
			showClickHeatDebug('Click not logged: out of document (should be a click on scrollbars)');
			return true;
		}
		clickTime=new Date();
		if(clickTime.getTime()-clickHeatTime<1000){
			showClickHeatDebug('Click not logged: at least 1 second between clicks');
			return true;
		}
		clickHeatTime=clickTime.getTime();
		if(clickHeatQuota>0){
			clickHeatQuota=clickHeatQuota-1;
		}
		params='s='+clickHeatSite+'&g='+clickHeatGroup+'&x='+(x+scrollx)+'&y='+(y+scrolly)+'&w='+w+'&b='+clickHeatBrowser+'&c='+c+'&random='+Date();
		showClickHeatDebug('Ready to send click data...');
		var sent=false;
		if(clickHeatServer.substring(0, 4)!='http'){
			var xmlhttp=false;
			try {
				xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e){
				try {
					xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
				}
				catch (oc) {
					xmlhttp=null;
				}
			}
			if(!xmlhttp&&typeof XMLHttpRequest!=undefined)
				xmlhttp=new XMLHttpRequest();
			if(xmlhttp){
				if(clickHeatDebug==true){
					xmlhttp.onreadystatechange=function(){
						if(xmlhttp.readyState==4){
							if(xmlhttp.status==200){
								showClickHeatDebug('Click recorded at '+clickHeatServer+' with the following parameters:<br />x='+(x+scrollx)+' ('+x+'px from left+'+scrollx+'px of horizontal scrolling)<br />y='+(y+scrolly)+' ('+y+'px from top+'+scrolly+'px of vertical scrolling)<br />width='+w+'<br />browser='+clickHeatBrowser+'<br />click='+c+'<br />site='+clickHeatSite+'<br />group='+clickHeatGroup+'<br /><br />Server answer: '+xmlhttp.responseText);
							}else if(xmlhttp.status==404){
								showClickHeatDebug('click.php was not found at: '+(clickHeatServer!=''?clickHeatServer:'/clickheat/click.php')+' please set clickHeatServer value');
							}else{
								showClickHeatDebug('click.php returned a status code '+xmlhttp.status+' with the following error: '+xmlhttp.responseText);
							}
						}
					}
				}
				xmlhttp.open('GET', clickHeatServer+'?'+params, true);
				xmlhttp.setRequestHeader('Connection', 'close');
				xmlhttp.send(null);
				sent=true;
			}
		}
		if(sent==false){
			if(clickHeatDebug==true){
				showClickHeatDebug('Click recorded at '+clickHeatServer+' with the following parameters:<br />x='+(x+scrollx)+' ('+x+'px from left+'+scrollx+'px of horizontal scrolling)<br />y='+(y+scrolly)+' ('+y+'px from top+'+scrolly+'px of vertical scrolling)<br />width='+w+'<br />browser='+clickHeatBrowser+'<br />click='+c+'<br />site='+clickHeatSite+'<br />group='+clickHeatGroup+'<br /><br />Server answer:<br />'+'<iframe src="'+clickHeatServer+'?'+params+'" width="400" height="30"></iframe>');
			}else{
				var clickHeatImg=new Image();
				clickHeatImg.src=clickHeatServer+'?'+params;
			}
		}
	}
	catch(e){
		showClickHeatDebug('An error occurred while processing click (Javascript error): '+e.message);
	}
	return true;
}
var clickHeatGroup='';
var clickHeatSite='';
var clickHeatServer='';
var clickHeatLastIframe=-1;
var clickHeatTime=0;
var clickHeatQuota=-1;
var clickHeatBrowser='';
var clickHeatDocument='';
var clickHeatDebug=(window.location.href.search(/debugclickheat/)!=-1);
//var clickHeatDebug=1;
function initClickHeat(){
	if(clickHeatDebug==true){
		document.body.innerHTML=document.body.innerHTML+'<div id="clickHeatDebuggerDiv" style="padding:5px;display:none;position:absolute;top:10px;left:10px;border:1px solid #888;background-color:#eee;z-index:99;"><strong>ClickHeat debug: <a href="#" onmouseover="document.getElementById(\'clickHeatDebuggerDiv\').style.display=\'none\';return false">Rollover to close</a></strong><br /><br /><span id="clickHeatDebuggerSpan"></span></div>';
	}
	domain=window.location.href.match(/http:\/\/[^/]+\//);
	if(domain!=null&&clickHeatServer.substring(0, domain[0].length)==domain[0]){
		clickHeatServer=clickHeatServer.substring(domain[0].length-1, clickHeatServer.length)
	}
	if(typeof document.onmousedown=='function'){
		currentFunc=document.onmousedown;
		document.onmousedown=function(e) {
			catchClickHeat(e);
			return currentFunc(e);
		}
	}else{
		document.onmousedown=catchClickHeat;
	}
	iFrames=document.getElementsByTagName('iframe');
	for (i=0;i<iFrames.length;i++){
		if(typeof iFrames[i].onfocus=='function'){
			currentFunc=iFrames[i].onfocus;iFrames[i].onfocus=function(e) {
				catchClickHeat(e);
				return currentFunc(e);
			}
		}else{
			iFrames[i].onfocus=catchClickHeat;
		}
	}
	clickHeatDocument=document.documentElement!=undefined&&document.documentElement.clientHeight!=0?document.documentElement:document.body;
	var b=navigator.userAgent!=undefined?navigator.userAgent.toLowerCase().replace(/-/g, ''):'';
	clickHeatBrowser=b.replace(/iceweasel/, 'firefox').replace(/^.*(firefox|kmeleon|safari|msie|opera).*$/, '$1');
	if(b==clickHeatBrowser||clickHeatBrowser=='')
		clickHeatBrowser='unknown';
	showClickHeatDebug('ClickHeat initialised with:<br />site='+clickHeatSite+'<br />group='+clickHeatGroup+'<br />server='+clickHeatServer+'<br />quota='+(clickHeatQuota==-1?'unlimited':clickHeatQuota)+'<br /><br />browser='+clickHeatBrowser);
}
function showClickHeatDebug(str){
	if(clickHeatDebug==true){
		document.getElementById('clickHeatDebuggerSpan').innerHTML=str;
		document.getElementById('clickHeatDebuggerDiv').style.display='block';
	}
}