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 = function() {
    externalLinks();   
	$("a.trd").click(
		function() { 
			var h = $(this).attr("href"); 

			$("tr").removeClass("active");

			$("tr"+h).addClass("active");
			$("tr"+h+"nl").addClass("active");
		}
	); 
}