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") == "poppi") {
                anchor.onclick = function ()
			{ return pop(this.href) }
            } else if (anchor.getAttribute("href") &&
                anchor.getAttribute("rel") == "external") {
                anchor.target = "_blank";
    }
        }
}
 
 // Popup

var popUp = null;

function pop(url)
{
	if (popUp && !popUp.closed)
		popUp.location.href = url;
	else
		popUp = window.open(url,'popUp','height=450,width=450,scrollbars=no,resizable=yes,toolbar=no,location=no, top=10, left=50');
	popUp.focus();
	return false;
}


 window.onload = externalLinks;