function setHover(){
  if(document.all){
    NAV = navigator.appVersion;
    IE5 = (NAV.substr(NAV.indexOf('MSIE')+5,1) == '5')?true:false;//on test la version d'internet explorer
       MN  = document.getElementById('menu');
    LI  = MN.getElementsByTagName('li');

    //if(IE5){
    //  MN.style.left = '-10px';//margin différent si ie5
    //}
    
    for(i in LI){
         
      LI[i].className = 'ieLI';
      LI[i].onmouseover= function(){
        this.className = 'ieLIhover';
        UL    = this.getElementsByTagName('UL');
                
        if(UL[0]){
          UL[0].style.display = 'block';
          
        }
      }
       LI[i].onclick = function(){
         this.className = 'ieLI';
         UL = this.getElementsByTagName('UL');
        if(UL[0]){
           UL[0].style.display = 'none';
         }
       }
    }
  }
}