function HideSelects()
{
   var selects = document.getElementsByTagName('select');
   for(i=0; i<selects.length; i++)
   {
      if (selects[i].name != 'sltLocation' && selects[i].name != 'sltFunction' && selects[i].name != 'sltDomain')
      {
         selects[i].style.visibility = 'hidden';
         selects[i].style.display = 'block';
      }
   }
}

function ShowSelects()
{
   var selects = document.getElementsByTagName('select');
   for(i=0; i<selects.length; i++)
   {
      if (selects[i].name != 'sltLocation' && selects[i].name != 'sltFunction' && selects[i].name != 'sltDomain')
      {
         selects[i].style.visibility = 'visible';
         selects[i].style.display = 'block';
      }   
   }
}