// create xhtml compliant links to external sites
function externalLinks() { 
	if (!document.getElementsByTagName) {
		// do nothing
	} else {
		var anchors = document.getElementsByTagName("a");
		for(i=0; i<anchors.length; i++) {
			var anchor = anchors[i];
			if (anchor.getAttribute("rel") == "external") {
				anchor.target = "_blank";
			}
		}
	} 
 }
window.addOnloadHandler(externalLinks);

//Create a popup window that can be controlled for the new 'Understanding the Digital Natvie'
function createPopup() {
  window.open('/popup.aspx', '_blank', 'height=596px,width=740px,resizable=no,toolbar=no,menubar=no,scrollbars=no,location=no');
}