var imageDir = root_path + 'images/misc/';

// MenuImage(image_id, normal_image, active_image, mouseover_image, image_swapped)
var MImages = new Array(
    new MenuImage("mnu_signup", "signup_button_off.gif", "signup_button_on.gif", "signup_button_on.gif", 0),
    new MenuImage("mnu_signup2", "signup_button_off.gif", "signup_button_on.gif", "signup_button_on.gif", 0)
    );