function wopen(url, name, w, h)
	{
	var win = window.open(url,name, 
  		'width=' + w + ', height=' + h + ', ' +
  		'location=yes, menubar=yes, ' +
  		'status=yes, toolbar=yes, scrollbars=yes, resizable=yes');
  		win.focus();
	}
	
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;