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";
	}
}
window.onload=externalLinks;