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;

	$(document).ready(function() {
		//externallinks();
		//alert('a');
		
		$('a[rel*=external]').attr('target', '_blank');
	});