//external.js

addEvent(window,'load',externalLinks );

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") == "nofollow")
     anchor.target = "_blank";

   if (anchor.getAttribute("href") &&
       anchor.getAttribute("class") == "jumptop")
     anchor.onclick = function(){ window.scroll(0,0);return false; }

 }
}

function addEvent( elx, event, func ){
	if ( elx.addEventListener ) {
		elx.addEventListener( event, func, false );
	} else {
		elx.attachEvent( 'on'+event, func );
	}
}