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;

/*function activeLinks() {
	var a = document.getElementsByTagName("a");   
   var max_count = a.length;   
   var m = 0;   
   while(m < max_count){   
      m++;
		document.
		document.write("class=\"active\""); 
   } 
}
window.onload = activeLinks;*/