a.project_thumbnail {
	height: 140px;
	width: 160px;
	display:block;
	overflow:hidden;
	margin:1em 1em 0 0;
	float:left;
	border:none;
	}
a.end_col {
	margin-right:0;
	}
	
a.project_thumbnail img{
	margin:0;
	border:none;
	}
a.project_thumbnail:hover img {
	margin-left:-160px;
	}