function ShowHideDescription(obj,showit)
{
	if(document.getElementById)
	{
		var rs = document.getElementById("MainArea");
		var ar = obj.getElementsByTagName("div");
		for (var i=0; i<ar.length; i++)
		{
			if(showit)
			{
	   		if (ar[i].className=="rss_description_tip hide_tip") ar[i].className="rss_description_tip show_tip"
			}
			else
			{
	   		if (ar[i].className=="rss_description_tip show_tip") ar[i].className="rss_description_tip hide_tip"
			}
		}
	}
}