jQuery Grid Plugin - jqGrid

Hello,

It wasn't until yesterday that I have found this great Jquery plugin yet I can't get it running.

I have two pages: display_articleshtml.php (which contains the html code) and (display_articles2.php) which contains the php (database related code).

First, until now I have a problem understanding the parameters that are passed to the server(.php pages). Where do the page', 'sidx', 'sort','row' URL variables get passed?

After finally managing to return a valid xml document from display_articles2.php, still nothing is being displayed at display_articleshtml.php 

Could anyone kindly point out what I am doing wrong….

Here is my PHP (server side code)- display_articles2.php:

<?php
//this block is for paging/sorting and displaying the results
require_once ('../includes/config.inc.php');
$lang=return_lang();
require_once(BASE_URI.'languages/'.$lang.'.php'); 
?>
<? // Determine how many pages there are…
// get the requested page

if (isset($_REQUEST['page'])) {
$page = $_REQUEST['page'];
} else {
$page='1';
}
// get how many rows we want to have into the grid
// rowNum parameter in the grid
if (isset($_REQUEST['row'])) {
$limit = $_REQUEST['row'];
} else {
$limit='10';
}

if (isset($_REQUEST['sidx'])) {
$sidx = $_REQUEST['sidx'];
} else {
$sidx='1';
}

if (isset($_REQUEST['sort'])) {
$sord = $_REQUEST['sort'];
} else {
$sord='ASC';
}

// get index row - i.e. user click to sort
// at first time sortname parameter - after that the index from colModel

// if we not pass at first time index use the first column for the index
if(!$sidx) $sidx =1;

    $q2 = “SELECT COUNT(article_id) FROM articles”;
    $r2 = mysql_query($q2,$dbc);

    $row = mysql_fetch_array($r2);
    $count = $row[0];

//calculation of total pages for the query
if( $count >0 ) {
    $total_pages = ceil($count/$limit);
} else {
    $total_pages = 0;
}

// if for some reasons the requested page is greater than the total
// set the requested page to total page
if ($page > $total_pages) $page=$total_pages;

// calculate the starting position of the rows
$start = $limit*$page - $limit; // do not put $limit*($page - 1)
// if for some reasons start position is negative set it to 0
// typical case is that the user type 0 for the requested page
if($start <0) $start = 0;
// Determine the sorting order:
// Make the query:
$q = “SELECT articles.article_id, articles_categories.name as category_name, DATE_FORMAT(articles.date_added, '%d %M, %Y') AS date_added, articles.title, articles.description, articles.privacy,articles.sticky FROM articles INNER JOIN articles_categories ON articles.category_id=articles_categories.category_id   ORDER BY $sidx $sord LIMIT $start , $limit”;
$r = mysql_query($q,$dbc); // Run the query.
// Table header:
if ( stristr($_SERVER["HTTP_ACCEPT"],”application/xhtml+xml”) ) {
              header(”Content-type: application/xhtml+xml;charset=utf-8″);
} else {
          header(”Content-type: text/xml;charset=utf-8″);
}
echo “<?xml version='1.0' encoding='utf-8'?>”;
echo “<rows>”;
echo “<page>”.$page.”</page>”;
echo “<total>”.$total_pages.”</total>”;
echo “<records>”.$count.”</records>”;
while ($row = mysql_fetch_array($r, MYSQL_ASSOC)) {
if ($row['sticky']==YES) {
$stickyimage=”thumb_up.gif”;
} else {
$stickyimage=”thumb_down.gif”;
}

if ($row['privacy']==EVERYBODY) {
$privacyimage=”public-icon.png”;
} elseif ($row['privacy']==REGISTERED) {
$privacyimage=”user-icon.png”;
} else {
$privacyimage=”private-icon.png”;
}

echo “<row id='”. $row['article_id'] .”'>”;           
            echo “<cell>”. $row['category_name'].”</cell>”;
            //echo “<cell>”. $row['article_id'] .”</cell>”;
            echo “<cell>”. '<img width=”16″ height=”16″ border=”0″ src=”../images/icon_delete.gif”/>'.”</cell>”;
            echo “<cell>”. '<img width=”16″ height=”16″ border=”0″ src=”../images/icon_delete.gif”/>'.”</cell>”;
            echo “<cell>”. '<img border=”0″ src=”../images/'.$stickyimage.'”/>'.”</cell>”;
            echo “<cell>”. '<img border=”0″ src=”../images/'.$privacyimage.'”/>'.”</cell>”;
            echo “<cell>”. formatdate($row['date_added']).”</cell>”;
           
            echo “<cell>”. $row['title'].”</cell>”;
            echo “</row>”;
}
echo “</rows>”;

?>

Thanks