.submenu{
	position:relative;
	z-index:5;
	height:33px;
	overflow:hidden;
}

.submenu:hover {
	overflow:visible;
}

.submenu:hover .dropdown{
	visibility: visible;
}

.submenu .dropdown{
	position:absolute;
	display:block;
	visibility: hidden;
	left:-1px;
	top:33px;
	z-index:10;
}