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

Question

    add_action('admin_menu', 'pag_admin_menu');
add_filter('wp_list_pages_excludes','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....!! enter code here