var IE = document.all?true:false   
  var str_object
    
  function link_on (str_object) {
    if (!IE) {
      str_object.style.MozOpacity='.10';
    }
    
    else {
      str_object.filters.alpha.opacity='10'
    }
  
    return true;
  }
        
  function link_off (str_object) {
    if (!IE) {
      str_object.style.MozOpacity='0';
    }
    
    else {
      str_object.filters.alpha.opacity='0'
    }
    
    return true;
  }