function addEvent(obj, evType, fn){
 if (obj.addEventListener){
   obj.addEventListener(evType, fn, true);
   return true;
 } else if (obj.attachEvent){
   var r = obj.attachEvent("on"+evType, fn);
   return r;
 } else {
   return false;
 }
}
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";
   }
}

addEvent(window, 'load', externalLinks);
//New-Window Links in a Standards-Compliant World
//By Kevin Yank http://blogs.sitepoint.com/standards-compliant-world/http://blogs.sitepoint.com/standards-compliant-world/

function openwindow (url) {
 fenster = window.open(url, "fenster1", "width=600,height=400,status=no,scrollbars=yes,resizable=yes");
 fenster.focus();
}