function filterGroupId(groupid,pageid)
{
  if ( (groupid) && (groupid.length > 0) )
  {
    var reqFilter = new Request(
    {
      url:'companies_select.php',
      method: 'post',
      data:'ajax=filter&groupid='+groupid,
      onComplete:function(t, x)
      {
        window.top.location.href="index.php?id="+pageid;
      }
    }).send();
  }
}