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"
	}
}
addStartEvent(externalLinks)