var menus = [
   new ypSlideOutMenu("menu1", "down", 231, 24, 179, 600),
   new ypSlideOutMenu("menu2", "down", 430, 24, 175, 600)
]

for (var i = 0; i < menus.length; i++) {
    menus[i].onactivate = new Function("document.getElementById('act" + i + "').className='active';");
    menus[i].ondeactivate = new Function("document.getElementById('act" + i + "').className='';");
}

ypSlideOutMenu.writeCSS();