window.onload = function(){
	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.onclick = function(event){
				return popupWindow(this, event);
				}
		}
	}
	function popupWindow(anchor, event){
		window.open(anchor,"new");
		return false;
	}
}