function ExternalLinks()
{
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i = 0; i < anchors.length; i++)
	{
		var anchor = anchors[i];
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
			anchor.target = "_blank";
	}
}
if (window.addEventListener) 
	window.addEventListener("load", ExternalLinks, false);
else if (window.attachEvent) 
	window.attachEvent("onload", ExternalLinks);
else 
	window.onload = ExternalLinks;