By default, KoolGrid use postback to communicate with server and update data. When you page does not allow ajax communication, postback method seems the best option.
span style="color: #ff0000;">"/KoolGrid/koolgrid.php"//This $db_con link has been created inside KoolPHPSuite/Resources/runexample.php
$ds->SelectCommand = "select customerNumber,customerName,phone,city from customers""grid");
$grid->scriptFolder = $KoolControlsFolder."/KoolGrid";
$grid->styleFolder="default""655px""form1" method="post"
KoolGrid - Powerful PHP GridFullVersion 4.4.0.0 released on 10/22/2012