var maxtries = 0;
function ParseKeywords()
{
	try
	{
		var ads = YAHOO.util.Dom.getElementsByClassName("VietAdTextLink");
		if((ads == null || ads.length == 0) && maxtries < 10) 
		{		
			maxtries++;
			setTimeout("ParseKeywords()",2000);
			return;
		}
		var index = Math.floor(Math.random()*ads.length);
		if(index >= ads.length || index < 0) index = 0;
		var last = ads[index];
		var last_id = last.id;
		if(last_id != null && last_id.indexOf("link") >= 0)
		{
			var id = last_id.substr(4,last_id.length - 4);
			displayAd(id);
			var vadiv = document.getElementById("VietAdTooltipBox");
			vadiv.style.visibility= "hidden";
			YAHOO.util.Cookie.set('vd2010','1',{path:"/"});
		}		
	}
	catch(e){}
}
ParseKeywords();