DDmenu = null;
DDanchor = null;
DDclassName = null;

function hideDD()
{
  if(DDmenu)
  {
    if(DDmenu.style.display == 'block')

    {
      temp = DDanchor.className;
      temp = temp.replace(/on/,'');
      DDanchor.className = temp;
      DDmenu.style.display = 'none';
    }
  }
}