WordPress Ajax Login -- Load Template

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<?php
/**
 * loads a template from a specificed path
 *
 * @package Ajax
 *
 * @uses load_template()
 * @todo move to zm-ajax or something?
 */
function zm_load_template() {
    $path = dirname( dirname( plugin_dir_path( __FILE__ ) ) );

    $template = $path . '/' . $_POST['template'];

    if ( $template == null )
        wp_die( 'Yo, you need a template!');

    load_template( $template );
    die();
} // zm_load_template
add_action( 'wp_ajax_nopriv_zm_load_template', 'zm_load_template' );
add_action( 'wp_ajax_zm_load_template', 'zm_load_template' );