function TwoFrames(URL1,F1,URL2,F2)
{  
  parent.frames[F1].location.href=URL1;
  if (F2 != '')
  {
	  if (F2 == '_blank')
	  {
		  window.open(URL2, "", "");
	  }
	  else {
		parent.frames[F2].location.href=URL2;
	  }
  }
}