var g_adCurrent = null;
function advertisementsStart()
{
	var i = -1;
	if(g_adCurrent!=null)
		i = parseInt(g_adCurrent.id.substr(g_adCurrent.id.indexOf("_")+1), 10);
	i++;
	var obj = document.getElementById("ad_"+i);
	if(obj==null && i!=0)
	{
		i = 0;
		obj = document.getElementById("ad_"+i);
	}
	
	if(obj!=null)
	{
		switch(obj.tagName.toUpperCase())
		{
		case "A":
		case "IMG":
			document.getElementById("ad_type_1").style.display = "";
			obj.style.display = "";
			var duration = 5000;
			var dur = obj.getAttribute("duration");
			if(dur!=null)
			{
				dur = parseInt(dur,10);
				if(!isNaN(dur) && dur>=1)
					duration = dur * 1000;
			}
			if(document.getElementById("ad_type_1").getElementsByTagName(obj.tagName.toUpperCase()).length>1)
				setTimeout(advertisementsImage, duration);
			break;
		}
		g_adCurrent = obj;		
	}
}
function advertisementsImage()
{
	if(_util.isie)
	{
		g_adCurrent.parentNode.style.filter="blendTrans(duration=1)";
      	g_adCurrent.parentNode.filters.blendTrans.Apply();
	}
	g_adCurrent.style.display = "none";
	advertisementsStart();
	if(_util.isie)
	{
		g_adCurrent.parentNode.filters.blendTrans.Play();
	}
}