jQuery Grid Plugin - jqGrid

I have attempted to use the master detail feature however it only allows me to map one grid as a child.  I will have 3 grids, the main one has a customer list, a second grid will contain internet circuits the customer has from us and the third grid will have phone circuits they have from us.  So what I would like is when a customer is selected it then updates the other two grids with circuit and phone number information.  I can get this to work with select a customer and see phone information as well as select a customer and see internet circuit information.  I cannot however get it to work with both together.

I am using the stock grid.php and have copied the stock detail.php to vlan_detail.php and tdm_detail.php.  If I remove vlan_detail.php it shows everything perfect minus vlan_detail.php info.  If I remove tdm_detail.php it shows everything perfect.  I would like it to show both vlan_detail.php AND tdm_detail.php.

My page looks like this:

          <b>Customers</b>
          <?php include ("grid.php");?>
      </div>
      <div>
          <b>VLAN Information</b>
          <?php include ("vlan_detail.php");?>

          <b>TDM Information</b>
          <?php include ("tdm_detail.php");?>

UPDATE:  I got it to work with the tech support help below..

There is nothing special, but maybe you will need to pay attention on some things:
Considering this example:
http://www.trirand.com/blog/ph.....efault.php

1.  you will need to modify the onselect event in MASTER GRID so that it affect both grids
Suppose you have detail1 and detail2 subgrids

2. When constructing the second grid be a sure that they have different id

for detayl1 grid do this

for detail2 grid

Also don't forget to define the table on the detail pages.

$grid->table = "table name";