window.attachEvent("onload", MakeExternalLinksOpenInNewWindow);

function MakeExternalLinksOpenInNewWindow()
{
	window.status = "Making external links open in new window...";
	var anchors = document.getElementsByTagName("A");
	var host = location.protocol + "//" + location.host;
	var href;
	for(var i = 0; i < anchors.length; i ++)
	{
		href = anchors[i].getAttribute("href");
		if (href.indexOf(host) != 0)
		{
			anchors[i].setAttribute("target", "_blank");
		}
	}
	window.status = window.defaultStatus;
}