[badimalex]

пробовал так

<script type="text/javascript"> 
			var box = jQuery.noConflict();
			var box = {};
			window.addEvent('domready', function(){
				box = new MultiBox('mb', {descClassName: 'multiBoxDesc', useOverlay: true});
				multiBoxDesc('mb1').fireEvent('click');
			});
		</script>