var currentRollover = false;
        
  function rollOn(obj)
  {        
    rollOff();        
    currentRollover = obj;
    
    if(currentRollover != null)
    {           
      if(currentRollover.className == "pressed")
        currentRollover = false;
      else
        currentRollover.className = "rollover";    
    }
    else
      currentRollover = false;
  }
  
  function rollOff()
  {  
    if (currentRollover != false) 
    {
      currentRollover.className = "menuLeft";
      currentRollover = false;
    }       
  }