basku on "wp_script_is & wp_enqueue_scripts"

Hi :)

I am trying to modify an existing theme on local host to suit my needs. When in debug mode I am getting the following notice:

wp_script_is was called incorrectly. Scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, or init hooks

turns out the code that causes this notice is

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/**
     * Display Primary Menu
     */

    if($this->display('menu_primary')) {

        // Register
        register_nav_menu( 'primary',  __( 'Primary Menu', 'themater' ) );

        // Display Hook
        $this->add_hook($this->options['menus']['menu-primary']['hook'], 'themater_menu_primary_display');

        if(!wp_script_is('jquery')) {
            wp_enqueue_script('jquery');
        }

        if(!wp_script_is('hoverIntent')) {
            wp_enqueue_script('hoverIntent', THEMATER_URL . '/js/hoverIntent.js');
        }

        if(!wp_script_is('superfish')) {
            wp_enqueue_script('superfish', THEMATER_URL . '/js/superfish.js');
        }

        $this->custom_js(themater_menu_primary_js());
    }

How do i correct this issue ?
What changes do i need to make ?

Any help would be greatly appreciated.
Thanks a lot :)

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