Grid can be loaded Dynamically via ajax.
<?php 
require_once '../../../../php/demo/tabs.php';
?>
<!DOCTYPE html>
<html>
  <head>
    <title>jqGrid PHP Demo</title>
    <link rel="stylesheet" type="text/css" media="screen" href="../../../../css/jquery-ui.css" />
    <link rel="stylesheet" type="text/css" media="screen" href="../../../../css/trirand/ui.jqgrid.css" />
    <link rel="stylesheet" type="text/css" media="screen" href="../../../../css/ui.multiselect.css" />
    <style type="text">
        html, body {
        margin: 0;            /* Remove body margin/padding */
        padding: 0;
        overflow: hidden;    /* Remove scroll bars on browser window */
        font-size: 75%;
        }
        
    </style>
    <script src="../../../../js/jquery.min.js" type="text/javascript"></script>
    <script src="../../../../js/trirand/i18n/grid.locale-en.js" type="text/javascript"></script>
         <script src="../../../../js/trirand/jquery.jqGrid.min.js" type="text/javascript"></script> <script type="text/javascript">         
    $.jgrid.no_legacy_api = true;
    $.jgrid.useJSON = true;
    $.jgrid.defaults.width = "700";
    </script>
     
    <script src="../../../../js/jquery-ui.min.js" type="text/javascript"></script>
         <script src="../../../../js/trirand/jquery.jqGrid.min.js" type="text/javascript"></script> <script type="text/javascript">         
        jQuery(document).ready(function(){
            jQuery("#loadgrid").click(function(){
                $.ajax({
                    url: "grid.php",
                    dataType : "html",
                    data : {gridheigh: "300"},
                    success : function(data) {
                        $("#griddef").html( data );
                        $("#loadgrid").remove();
                    }
                });
            });
        });
        
    </script>
  </head>
  <body>
      <div>
          <button id="loadgrid">LoadGrid</button> 
          <div id="griddef"></div>
      </div>
      <br/>
      <?php tabs(array("grid.php"));?>
   </body>
</html>
grid.php.
<?php
require_once '../../jq-config.php';
// include the jqGrid Class
require_once ABSPATH."php/PHPSuito/jqGrid.php";
// include the driver class
require_once ABSPATH."php/PHPSuito/DBdrivers/jqGridPdo.php";

// Connection to the server
$conn = new PDO(DB_DSN,DB_USER,DB_PASSWORD);
// Tell the db that we use utf-8
$conn->query("SET NAMES utf8");
// Create the jqGrid instance
$grid = new jqGridRender($conn);
// this table is 1252 encoded, so we need to tell the grid
// Set the table data source
$grid->setTable('products');
// set the ouput format to xml since json have problems
$grid->dataType = 'json';
// Let the grid create the model
$grid->setColModel();
// Set the url from where we obtain the data
$grid->setUrl('grid.php');
// Set some grid options

//get the height passed as parameter
$height = jqGridUtils::GetParam('gridheigh', '200');
$grid->setGridOptions(array(
    "rowNum"=>10,
    "rowList"=>array(10,20,30),
    "sortname"=>"ProductID", 
    "height"=>$height, 
    "shrinkToFit"=>false, 
    "hoverrows"=>true
));
$grid->setColProperty("ProductID", array("width"=>80));

// We can hide some columns
$grid->setColProperty("SupplierID", array("hidden"=>true));
$grid->setColProperty("CategoryID", array("hidden"=>true));
$grid->setColProperty("UnitsOnOrder", array("hidden"=>true));
$grid->setColProperty("ReorderLevel", array("hidden"=>true));
$grid->setColProperty("Discontinued", array("hidden"=>true));
// Enable toolbar searching
$grid->toolbarfilter = true;
$grid->setFilterOptions(array("stringResult"=>true));
// Enjoy
$grid->renderGrid('#grid','#pager',true, null, null, true,true);