var host = document.location.host;
var ext = [".pdf", ".doc", ".xls", ".ppt", ".mp3" ];

for (var i=0; i<document.anchors.length; i++ )
{
	//alert(document.anchors[i].href);
	if (document.links[i].href.indexOf(host) == -1) 
	{
		//external link
		document.links[i].onclick = function() { return ntptLinkTag(this); };
	}
	else
	{
		for (var j=0; j<ext.length; j++)
		{
			if (document.links[i].href.indexOf(ext[j]) > -1)
			{
				//non-html link
				document.links[i].onclick = function() { return ntptLinkTag(this); };
			}
		}
	}
};