function loadframe(srcname)
{
  var found = false;
  
  for(i = 0; i < parent.frames.length; i++)
  {
    if (parent.frames['index'] == parent.frames[i])
    {
      found = true;
      break;
    }
  }
  
  if (found == false)
  {
    top.location.href = 'loadframe.htm?' + srcname;
  }
}