[jQuery] blockUI like demo#8

How can i have a pop-up "Thank you"  like demo#8 ( 
http://jquery.malsup.com/block/#demos
) after the fuction finish ?


My code is:

<script language="javascript" type="text/javascript">

    function openHelp()
  {

   $.blockUI({ message: $('#divHelp') });

  };

</script>