Admin-Page-Class : Adding hashes to the URL

<?php
/**
 * Modified function in class - START->END HASH
 * admin-page-class.php#L448
 */
public function panel_script() {
    /* ... */
    echo '
          //bind click on menu action to show the right tab.
          jQuery(".panel_menu li").bind("click", function(event){
            event.preventDefault()
            if (!jQuery(this).hasClass("active_tab")){
        //hide all
        jQuery(".setingstab").hide("slow");
        jQuery(".panel_menu li").removeClass("active_tab");
        tab  = jQuery(this).find("a").attr("href");
        jQuery(this).addClass("active_tab");
        jQuery(tab).show("fast");

        /* START HASH */
        hash = tab.replace( "#", "" );
        location.hash = "btn_"+hash;
        /* END HASH */
            }
          });'
    /* ... */
}

/**
 * Manipulate first active tab according to URL hash
 * my-plugin.php
 */
add_action( 'admin_init', 'mtt_temp_plugin_init' );

function mtt_temp_plugin_init()
{
    global $mtt_class_admin_instance;
    $page = $mtt_class_admin_instance->options_class->_Slug;
    add_action('load-'.$page, 'print_header_footer_scripts' );
}

function print_header_footer_scripts()
{
    global $mtt_class_admin_instance;
    $page = $mtt_class_admin_instance->options_class->_Slug;
    add_action('admin_head-'.$page, 'my_custom_css');
    add_action('admin_footer-'.$page, 'manipulate_options_hashes', 15 );
}

function my_custom_css() {}

function manipulate_options_hashes()
{
    ?>
    <script type="text/javascript">
        jQuery(document).ready( function($)
        {
            if( location.hash )
            {
                // get our hash
                hash = location.hash.substring(1);
                hash = hash.replace( "btn_", "" );

                // prevent modifications on first page
                if( "login_logout" != hash )
                {
                    // toggle active menu items
                    $('.panel_menu li:first').removeClass('active_tab');
                    $(".panel_menu li."+hash).addClass('active_tab');

                    // show content
                    $(".setingstab").hide("slow");
                    var tab  = $(".panel_menu li."+hash+" a").attr("href");
                    $(tab).show();
                }
            }
        });
    </script>
    <?php
}