function newwindow(url,w,h) {
	var winx = (screen.width/2)-(w/2);
	var winy = 0;
	window.open(url,'','toolbar=0,scrollbars=yes,location=0,statusbar=1,menubar=0,resizable=yes,width='+w+',height='+h+',left='+winx+',top='+winy+'');
}

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;