var altmenue = '';
function einblenden(umenue)
{
 if(ns)
  {
   for(i=1;i<6;i++)
    {
    document.layers[umenue.substring(0,10)+i].visibility = 'hidden';
    }
    if(altmenue == umenue)
      {
      document.layers[umenue].visibility = 'hidden';
      altmenue = '';
      }
    else
      {
      document.layers[umenue].visibility = 'visible';
      altmenue = umenue;
      }
  }

  if(ie)
  {
   for(i=1;i<6;i++)
    {
    document.all[umenue.substring(0,10)+i].style.visibility = 'hidden';
    }
    if(altmenue == umenue)
      {
      document.all[umenue].style.visibility = 'hidden';
      altmenue = '';
      }
    else
      {
      document.all[umenue].style.visibility = 'visible';
      altmenue = umenue;
      }
  }

  if(ns6)
  {
   for(i=1;i<6;i++)
    {
    document.getElementsByTagName('div')[umenue.substring(0,10)+i].style.visibility = 'hidden';
    }
    if(altmenue == umenue)
      {
      document.getElementsByTagName('div')[umenue].style.visibility = 'hidden';
      altmenue = '';
      }
    else
      {
      document.getElementsByTagName('div')[umenue].style.visibility = 'visible';
      altmenue = umenue;
      }
  }
}