AJAX autocomplete on wordpress admin pages

wordpress-admin.php

<?php /* From http://sudarmuthu.com/blog/using-wordpress-built-in-tag-auto-complete-script-in-your-plugins */ ?>


<?php
// Register hooks
add_action('admin_print_scripts', 'add_script');
add_action('admin_head', 'add_script_config');
 
/**
 * Add script to admin page
 */
function add_script() {
    // Build in tag auto complete script
    wp_enqueue_script( 'suggest' );
}
 
/**
 * add script to admin page
 */
function add_script_config() {
?>
 
    <script type="text/javascript" >
    // Function to add auto suggest
    function setSuggest(id) {
        jQuery('#' + id).suggest("<?php echo get_bloginfo('wpurl'); ?>/wp-admin/admin-ajax.php?action=ajax-tag-search&tax=post_tag", {multiple:true, multipleSep: ","});
    }
    </script>
<?php
}
?>