function mOver(cell)

{
   if (!cell.contains(event.fromElement))
   {
      cell.style.cursor = 'hand';
      cell.bgColor = '#D6D6D6';
   }
}

function mOut(cell)
{
   if (!cell.contains(event.toElement))
   {
      cell.style.cursor = 'default';
      cell.bgColor = '#FFFFFF';
   }
}

function swapImage(targetImage, newImageSrc)
{
    if(document.images)
    {
       if (targetImage && targetImage.src)
       {
          targetImage.src = newImageSrc;
       }
    }
}