function changeClass( idref, classname ) {   
  var el = document.getElementById(idref); 
  var attributeNode = el.getAttributeNode("class"); 
  if( attributeNode ) { attributeNode.value = classname; } 
  else { el.setAttribute("class", classname); } 
 }  
 window.onload = function(){ 
  var MENU1 = document.getElementById('MENU1'); 
  MENU1.onmouseover = function(){changeClass('MENU1','egohome-on');}; 
  MENU1.onmouseout = function(){changeClass('MENU1','egohome');}; 
  
   var MENU2 = document.getElementById('MENU2'); 
  MENU2.onmouseover = function(){changeClass('MENU2','egofun-on');}; 
  MENU2.onmouseout = function(){changeClass('MENU2','egofun');}; 
  
   var MENU3 = document.getElementById('MENU3'); 
  MENU3.onmouseover = function(){changeClass('MENU3','egoshop-on');}; 
  MENU3.onmouseout = function(){changeClass('MENU3','egoshop');}; 
  
   var MENU4 = document.getElementById('MENU4'); 
  MENU4.onmouseover = function(){changeClass('MENU4','egoinfo-on');}; 
  MENU4.onmouseout = function(){changeClass('MENU4','egoinfo');}; 
  
   var MENU5 = document.getElementById('MENU5'); 
  MENU5.onmouseover = function(){changeClass('MENU5','egocontact-on');}; 
  MENU5.onmouseout = function(){changeClass('MENU5','egocontact');}; 
  
   var MENU6 = document.getElementById('MENU6'); 
  MENU6.onmouseover = function(){changeClass('MENU6','egolinks-on');}; 
  MENU6.onmouseout = function(){changeClass('MENU6','egolinks');}; 
  
   var MENU7 = document.getElementById('MENU7'); 
  MENU7.onmouseover = function(){changeClass('MENU7','egoguestbook-on');}; 
  MENU7.onmouseout = function(){changeClass('MENU7','egoguestbook');}; 
  
   var ARC = document.getElementById('ARC'); 
  ARC.onmouseover = function(){changeClass('ARC','archive-on');}; 
  ARC.onmouseout = function(){changeClass('ARC','archive');};
  }