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";
		anchor.title = (anchor.title != "") ? anchor.title+" (opens in a new window)" : "opens in a new window";
		anchor.className = (anchor.className != '') ? anchor.className+' external' : 'external';
		}
	}
}
window.onload = externalLinks;