function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
	 anchor.onfocus		= function() { this.blur(); }
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}

window.onload = externalLinks;

function show(anydiv) { document.getElementById(anydiv).style.display='block'; }
function hide(anydiv) { document.getElementById(anydiv).style.display='none'; }