function momo(image)
    {
      if (image == 'preload')
        {  
          if (document.images)
            {
              for (image in document.images)
                {
                  curimage = document.images[image].src;
                  if (typeof curimage != 'undefined')
                    {
                      if (curimage.indexOf('_off.') >= 0)
                        {
                          onimage = curimage.replace(/_off./,'_on.');
                          holdImage = new Image();
                        }
                    }
                 }
             }                            
        }                    
      else
        {

         if (document[image].src.indexOf('_on') >= 0)
          {
            offimage = document[image].src.replace(/_on./,'_off.');
            swapimage = offimage;                
          }
        else
          {                 
            onimage = document[image].src.replace(/_off./,'_on.');
            swapimage = onimage;
          }  
        document[image].src = swapimage;
      }
    }