div.portfolio_gallery  {
	margin: 0;
	padding: 0;
	width: 820px;
	float: center;
	margin-left: 15px;
}

.gallery_item {
	width: 100px;
	height: 63px;
	margin: 5px;
	padding: 0;
	background-color: #303030;
	border: 2px solid #666;
	z-index:10;
	float: left;
}

.gallery_item img{
	height: 63px;
	width: 100px;
	opacity:0.4;
	filter:alpha(opacity=40);
	z-index: 1;
}