function openInterstitial(url, type){
	var newwin = window.open("/interstitial.php?url=" + encodeURIComponent(url), "_blank", "width=600,height=215,scrollbars=no,resizable=no");
}

function setupExternalLinks(root){
	try	{
		if (!root) root = document.getElementsByTagName("body")[0];
	} catch(ex)	{ return; }
	
	var links = root.getElementsByTagName("a");
	for(var i=0, len=links.length; i<len; i++) {
		var lnk = links[i];
		if (lnk.rel.toLowerCase() == "external") {
			lnk.href = "javascript:openInterstitial('" + lnk.href + "');";
		}
	}
}