#menu_rollover{ 
			margin: 1em; 
			clear: both;
		}


		img { border: none; }
		


		#menu_rollover a.rollover {
			width: 158px;
			display: block;
			overflow: hidden;
		}

		
		#menu_rollover a.rollover img {
			display: block;
		}


		#menu_rollover a.rollover:hover img {
			margin-left: -154px;
		}