function educastream_addEvent(obj, type, fn) 
{
	if (obj.attachEvent) 
	{
		obj['e'+type+fn] = fn;
		obj[type+fn] = function(){obj['e'+type+fn](window.event);}
		obj.attachEvent( 'on'+type, obj[type+fn] );
	}
	else
		obj.addEventListener( type, fn, false );
}

function educastream_getElementsByClass(searchClass,node,tag) 
{  
	var classElements = new Array();  
	if ( node == null )  
		node = document;  
	if ( tag == null )  
		tag = '*';  
	var els = node.getElementsByTagName(tag);  
	var elsLen = els.length;  
	var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');  
	
	for (i = 0, j = 0; i < elsLen; i++) 
	{  
		if (pattern.test(els[i].className)) 
		{  
			classElements[j] = els[i];  
			j++;  
		}  
	}  
	return classElements;  
}  

function educastream_addtracking()
{
	var x = educastream_getElementsByClass("tracker", null, "a");
	var tag ;
	for(var i = 0; i < x.length; i++)
	{
		tag = x[i];
		educastream_addEvent(tag, 'click', function addtracker()
		{
			tag.setAttribute("href", "http://eskdom021.netmastering2.net/c/" + tag.getAttribute("id"));
		});
	}
}
educastream_addtracking();