Wordpress Page Order

<?php
/* Version 2.8b - http://www.geekyweekly.com/mypageorder */
function mypageorder_menu()
{   if (function_exists('add_submenu_page')) {
        add_submenu_page(mypageorder_getTarget(), 'Page Order', __('Page Order', 'mypageorder'), 5,"mypageorder",'mypageorder');
    }
}
 
function mypageorder_js_libs() {
	if ( $_GET['page'] == "mypageorder" ) {
		wp_enqueue_script('jquery');
		wp_enqueue_script('jquery-ui-core');
		wp_enqueue_script('jquery-ui-sortable');
	}
}
 
//Switch page target depending on version
function mypageorder_getTarget() {
	global $wp_version;
	if (version_compare($wp_version, '2.6.5', '>'))
		return "page-new.php";
	else
		return "edit.php";
}
 
add_action('admin_menu', 'mypageorder_menu');
add_action('admin_menu', 'mypageorder_js_libs'); 
 
function mypageorder() {
global $wpdb;
$mode = "";
$mode = $_GET['mode'];
$parentID = 0;
if (isset($_GET['parentID']))
	$parentID = $_GET['parentID'];
	$success = "";
 
if($mode == "act_OrderPages") {  
	$idString = $_GET['idString'];
	$IDs = explode(",", $idString);
	$result = count($IDs);
 
	for($i = 0; $i < $result; $i++)
	{
		$wpdb->query("UPDATE $wpdb->posts SET menu_order = '$i' WHERE id ='$IDs[$i]'");
    }
	$success = '<div id="message" class="updated fade"><p>'. __('Page order updated successfully.', 'mypageorder').'</p></div>';
}
 
	$subPageStr = "";
	$results=$wpdb->get_results("SELECT * FROM $wpdb->posts WHERE post_parent = $parentID and post_type = 'page' ORDER BY menu_order ASC");
	foreach($results as $row)
	{
		$postCount=$wpdb->get_row("SELECT count(*) as postsCount FROM $wpdb->posts WHERE post_parent = $row->ID and post_type = 'page' ", ARRAY_N);
		if($postCount[0] > 0)
	    	$subPageStr = $subPageStr."<option value='$row->ID'>$row->post_title</option>";
	}
?>
<div class='wrap'>
	<h2><?php _e('Page Order', 'mypageorder') ?></h2>
<?php echo $success; ?>
	<p><?php _e('Choose a page from the drop down to order its subpages or order the pages on this level by dragging and dropping them into the desired order.', 'mypageorder') ?></p>
 
<?php	
	if($parentID != 0)
	{
		$parentsParent = $wpdb->get_row("SELECT post_parent FROM $wpdb->posts WHERE ID = $parentID ", ARRAY_N);
		echo "<a href='". mypageorder_getTarget() . "?page=mypageorder&parentID=$parentsParent[0]'>" . __('Return to parent page', 'mypageorder') . "</a>";
	}
 if($subPageStr != "") { ?>
	<h3><?php _e('Order Subpages', 'mypageorder') ?></h3>
	<select id="pages" name="pages"><?php
		echo $subPageStr;
	?>
	</select>
	&nbsp;<input type="button" name="edit" Value="<?php _e('Order Subpages', 'mypageorder') ?>" onClick="javascript:goEdit();">
<?php } ?>
 
	<h3><?php _e('Order Pages', 'mypageorder') ?></h3>
	<ul id="order" style="width: 500px; margin:10px 10px 10px 0px; padding:10px; border:1px solid #B2B2B2; list-style:none;"><?php
	foreach($results as $row)
	{
		echo "<li id='$row->ID' class='lineitem'>$row->post_title</li>";
	}?>
	</ul>
 
	<input type="button" id="orderButton" Value="<?php _e('Click to Order Pages', 'mypageorder') ?>" onclick="javascript:orderPages();">&nbsp;&nbsp;<strong id="updateText"></strong>
 
</div>
 
<style>
	li.lineitem {
		margin: 3px 0px;
		padding: 2px 5px 2px 5px;
		background-color: #F1F1F1;
		border:1px solid #B2B2B2;
		cursor: move;
		width: 490px;
	}
</style>
 
<script language="JavaScript">
 
	jQuery(document).ready(function(){
		jQuery("#order").sortable({ 
			placeholder: "ui-selected", 
			revert: false,
			tolerance: "pointer" 
		});
	});
 
	function orderPages() {
		jQuery("#orderButton").css("display", "none");
		jQuery("#updateText").html("<?php _e('Updating Page Order...', 'mypageorder') ?>");
 
		idList = jQuery("#order").sortable("toArray");
		location.href = '<?php echo mypageorder_getTarget(); ?>?page=mypageorder&mode=act_OrderPages&parentID=<?php echo $parentID; ?>&idString='+idList;
	}
 
	function goEdit () {
		if(jQuery("#pages").val() != "")
			location.href="<?php echo mypageorder_getTarget(); ?>?page=mypageorder&mode=dsp_OrderPages&parentID="+jQuery("#pages").val();
	}
</script>
<?php
}
?>