please help!!! this plugin to exclude Pages from the Front Page does not work.

<?php
   	add_action('admin_menu', 'pag_admin_menu');
	add_filter('get_pages','exclude_PAG');

	 function pag_admin_menu()
   		{
	    	add_options_page('Exclude', 'Exclude Page', 'administrator', 2, 'Pages');
	       }

   function Pages()
    {

		if( $_POST[ 'xclu_pag' ] )
			{
				$message = process_PAG();
			}
			$options = PAG_get_options();
			?>
		<div class="wrap">
		<h2>Exclude Categories</h2>
		<?php //echo $message ?>
		<p>Use this page to select the pages you want to exclude.</p>
		<form action="" method="post">
		<table width="960px">
		<thead>
				<tr>
					<th scope="col">Category</th>
					<th scope="col" align="left">Exclude from Front Page.</th>
				</tr>
				</thead>
					<tbody id="the-list">
					<?php
					//print_r( get_categories() );
					$pags = get_pages();
					//echo $pags;
					$temp_pag = 0;
					foreach( $pags as $pag )
						{
							?>
							<tr<?php if ( $temp_pag == 1 ) { echo ' class="alternate"'; $temp_pag = 0; } else { $temp_pag = 1; } ?>>
							<th scope="row"><?php echo $pag->post_title; ?></th>
							<td>
							<input type="checkbox" name="exclude_paggg[]" value="-<?php echo $pag->ID ?>" <?php if ( in_array( '-' . $pag->ID, $options['exclude_paggg'] ) ) { echo 'checked="true" '; } ?>/>
							</td>
							</tr>
							<?php
						}
					?>
		</table>
		<p class="submit"><input type="submit" value="Save Changes" /></p>
		<input type="hidden" name="xclu_pag" value="true" />
		</form>
		</div>
		<?php
	}

    function process_PAG()
	{

		if( !$_POST[ 'exclude_paggg' ] ) {
		$_POST[ 'exclude_paggg' ] = array();
			}

	$options['exclude_paggg'] = $_POST[ 'exclude_paggg' ];
	update_option('PAGExcludes', $options);

	$message_pag = "<div class='updated'><p>Excludes successfully updated</p></div>";
	return $message_pag;
}

function PAG_get_options()
	{
		$defaults = array();
		$defaults['exclude_paggg'] = array();
		$options = get_option('PAGExcludes');
		if (!is_array($options))
			{
				$options = $defaults;
				update_option('PAGExcludes', $options);
				}
				return $options;
		}

function exclude_PAG($query_pag)
	{
		$options = PAG_get_options();
		if ($query_pag->is_home) {
		$query_pag->set('pag', implode( ', ', $options[ 'exclude_paggg' ] ) );
	}

	return $query_pag;}

*** Where should I make any change to make it work to exclude pages from the front page..? INPUT WOULD BE GREATLY APPRECIATED….!!