function preload(imgObj,imgSrc) {
	if (document.images) {
		eval(imgObj+' = new Image()')
		eval(imgObj+'.src = "'+imgSrc+'"')
	}
 }

 function changeImage(layer,imgName,imgObj) {
	if (document.images) {
    	if (layer!=null) layer.src = eval(imgObj+".src");
		else document.images[imgName].src = eval(imgObj+".src");
    }
  return true;
 }


 preload('home1','/i/home1.gif');
 preload('home2','/i/home2.gif');
 preload('contact1','/i/contact1.gif');
 preload('contact2','/i/contact2.gif');
 preload('forum1','/i/forum1.gif');
 preload('forum2','/i/forum2.gif');



 window.onload = function(){
 	var imgs = document.getElementById('GLMenu').getElementsByTagName('img');

         imgs[0].onmouseover = function(){changeImage(this,null,"home2");}
         imgs[0].onmouseout = function(){changeImage(this,null,"home1");}

         imgs[1].onmouseover = function(){changeImage(this,null,"contact2");}
         imgs[1].onmouseout = function(){changeImage(this,null,"contact1");}

         imgs[2].onmouseover = function(){changeImage(this,null,"forum2");}
         imgs[2].onmouseout = function(){changeImage(this,null,"forum1");}
 }