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;

if (document.images) {
homeon = new Image();
homeon.src = "images/menu_home_on.gif";
homeoff = new Image();
homeoff.src = "images/menu_home_off.gif";

abouton = new Image();
abouton.src = "images/menu_about_us_on.gif";
aboutoff = new Image();
aboutoff.src = "images/menu_about_us_off.gif";

energyon = new Image();
energyon.src = "images/menu_energy_rating_on.gif";
energyoff = new Image();
energyoff.src = "images/menu_energy_rating_off.gif";

faqon = new Image();
faqon.src = "images/menu_faqs_on.gif";
faqoff = new Image();
faqoff.src = "images/menu_faqs_off.gif";

contacton = new Image();
contacton.src = "images/menu_contact_on.gif";
contactoff = new Image();
contactoff.src = "images/menu_contact_off.gif";

linkson = new Image();
linkson.src = "images/menu_links_on.gif";
linksoff = new Image();
linksoff.src = "images/menu_links_off.gif";

forumon = new Image();
forumon.src = "images/menu_forum_on.gif";
forumoff = new Image();
forumoff.src = "images/menu_forum_off.gif";

}

<!--
function openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
//-->