var _cep=[];

var _ceL={};
var _ceLT=new Date();
var _ceET=null;
var _ceAID=new Array();
 
 
//creates a unique id for elements that have no id tag
function CreateUniqueID(_1)
{
    var _2=false;
    var _3="";
    for(i=0;
    i<_ceAID.length;i++)
    {
        if(_1==_ceAID[i].name)
        {
            _2=true;
            break;
        }
    }
    
    if(_2)
    {
        _ceAID[i].count+=1;
        count=_ceAID[i].count;
    }
    else
    {
        _ceAID.push({name:_1,count:1});
        count=1;
    }
    return (_1+count);
} 



//We wanna have a good name for all the elements that we have on the heatmap afterwards.
//An anchorElements element is either a Link or an Image
function CreateNameForElement(anchorElement)
{
    imgCollection = anchorElement.getElementsByTagName("img");
    
    //check if the object that the user clicked on is an image, if yes, 
    //we can either use the alt tag, the title or some other tags.
    if(imgCollection.length>0)
    {
        img=imgCollection[0];
    
        if(img.alt)
        {
            link_text=img.alt;
        }
        else
        {
            if(img.title)
            {
                link_text=img.title;
            }
            else
            {
                if(img.longDesc)
                {
                    link_text=img.longDesc;
                }
                else
                {
                    link_text=img.src;
                }
            }
        }
    }
    //if it is not an image, lets see if we can use the inner
    //text or a title or something
    else
    {
        if(anchorElement.innerText)
        {
            link_text=anchorElement.innerText;
        }
        else
        {
            if(anchorElement.text)
            {
                link_text=anchorElement.text;
            }
            else
            {
                if(anchorElement.title)
                {
                    link_text=anchorElement.title;
                }
                else
                {
                    link_text=anchorElement.href;
                }
            }
        }
    }
    
    if(link_text=="")
    {
        link_text="No Text Found";
    }
    
    return link_text;
} 


//checks if the links points to a different site
function IsSameSite(linkHostname ,locationHostname)
{
    same=(linkHostname.indexOf(locationHostname)>=0 || locationHostname.indexOf(linkHostname)>=0)? true : false;
    return same;
} 


//for all pics on the page we set a link to crazyegg.com
//for links, we replace them with links to crazyegg.com
//QUESTION? not sure how they track html controls like buttons?
function PlaceLinksToCrazyEgg()
{
    var anchorElements = document.getElementsByTagName("a");

    for(var i=0; i<anchorElements.length; i++)
    {
        anchorElement = anchorElements.item(i);

        // QUESTION? looks like we do not replace absolute links?
        if(anchorElement.href.indexOf("http")==0)
        {
            link_id="CEID_";
            link_text="";
            if(anchorElement.id=="")
            {
                link_id += IsSameSite(anchorElement.hostname, location.hostname) ? anchorElement.pathname : anchorElement.href;
                link_id =  link_id.replace(/W/g,"_").replace(/_+/g,"_");
                link_id =  link_id.replace(/_$/,"");
                link_id =  CreateUniqueID(link_id);
            }
            else
            {
                link_id = anchorElement.id;
            }
            
            link_text = CreateNameForElement(anchorElement);

            _cep.push(
            {
                "text":link_text,"href":anchorElement.href,"target":anchorElement.target,"id":link_id,"name":anchorElement.name
            });

            var _9="?";
            _9+="pid=83913&";
            _9+="token=124678787&";
            _9+="text="+escape(link_text)+"&";
            _9+="href="+escape(_7[i].href)+"&";
            _9+="element_id="+escape(link_id);
            anchorElement.oldHref=anchorElement.href;
            anchorElement.href="http://crazyegg.com/track/"+_9;
            FixStatusBar(anchorElement);
        }
    }
} 


//this way the status bar still shows the old url and not to crazyegg.com
function FixStatusBar(_a)
{
    var _b=_a.onmouseover;
    
    if(typeof _a.onmouseover!="function")
    {
        _a.onmouseover=ShowLinkInStatusBar;
    }
} 

function ShowLinkInStatusBar()
{ 
    window.status=this.oldHref;
    this.onmouseout=function()
    {
        window.status="";
        return true;
    } 
    
    return true;
} 
 

// QUESTION? No idea what this does 
function ceHC(_c)
{
    var _d="";
    _d+="pid=83913&";
    _d+="token=124678787&";
    _d+="text="+_ceL.text+"&";
    _d+="href="+escape(_ceL.href);
} 


// QUESTION? No idea what this does 
function ceMoveOn()
{ 
    switch(_ceL.target) 
    { 
        case "": self.location=_ceL.href;
        break;
        
        case "_new": ceNewWindow=window.open(_ceL.href);
        break;
 
        case "_blank": ceNewWindow=window.open(_ceL.href);
        break;
    } 
} 


PlaceLinksToCrazyEgg();
 
 //© CrazyEgg 2006