var menus = [ new ypSlideOutMenu("menu1", "down", 670, 125, 135, 85), ] 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='';"); }