function addEvent( obj, type, fn )
{
   if (obj.addEventListener)
     obj.addEventListener( type, fn, false );
   else if (obj.attachEvent)
   { 
     obj["e"+type+fn] = fn;
     obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
     obj.attachEvent( "on"+type, obj[type+fn] );
   }
}

function removeEvent( obj, type, fn )
{
   if (obj.removeEventListener)
     obj.removeEventListener( type, fn, false );
   else if (obj.detachEvent)
   {
     obj.detachEvent( "on"+type, obj[type+fn] );
     obj[type+fn] = null;
     obj["e"+type+fn] = null;
   }
}

function addFavorite(title,url) {
  if (document.all) {
    window.external.addFavorite(url,title);
  } else if (window.sidebar) {
    window.sidebar.addPanel(title,url,"");
  } else {
    return true;
  }
  return false;
}