ImgPreload('_ROLLOVER1', 'images/menu10.png', 'images/menu11.png');
ImgPreload('_ROLLOVER2', 'images/menu20.png', 'images/menu21.png');
ImgPreload('_ROLLOVER3', 'images/menu30.png', 'images/menu31.png');
ImgPreload('_ROLLOVER4', 'images/menu40.png', 'images/menu41.png');
ImgPreload('_ROLLOVER5', 'images/menu50.png', 'images/menu51.png');
ImgPreload('_ROLLOVER6', 'images/menu60.png', 'images/menu61.png');