i have a page manageGroup.php, where user can also add member to group. I used colorbox to show the addGroupMember.php. Now i need to close that colorbox once i have done submitting the form.

javascript i am using in manageGroup.php

<script language="javascript" type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript" src="js/dropdown.js"></script>
<script type="text/javascript" src="js/jquery.colorbox.js"></script>
<script type="text/javascript">
 $(document).ready(function(){
 $(".iframe").colorbox({width:"80%", height:"80%", iframe:true});
 });
</script>

The link i am using to open colorbox

<a class="iframe" href="addGMember.php?id=<?php echo base64_encode($fetch->g_id)?>">Add Member</a>

the code in addGroupMember.php is like this:-

if($_POST['add']=="Go")
{
  $gid = $_POST['id'];
  $ii=0;
  $insert = "INSERT INTO ".DBGMEMBER." (gm_g_id,gm_m_id) VALUES ";
  foreach($_POST['gMember'] as $gMember)
  {
    if($ii==0)
    {
        $insert .= " ('".$gid."' , '".$gMember."')";
    }
    else
    {
        $insert .= " ,('".$gid."' , '".$gMember."')";   
    }
    $ii++;
  }
  $db->execute($insert);// after this i want to close the colorbox
  echo "<script>parent.$.fn.colorbox.close(); </script>";// code i used, but not working
}