.gallerycontainer{
position: relative;
height:300px;
/*Add a height attribute and set to largest image's height to prevent overlaying*/
}

.thumbnail img{
border: 0px solid white;
margin: 2 2px 2px 2;
}

.thumbnail:hover{
background-color: transparent;
}

.thumbnail:hover img{
	border-top-width: 0px;
	border-right-width: 0px;
	border-bottom-width: 0px;
	border-left-width: 0px;
	border-top-style: none;
	border-right-style: none;
	border-bottom-style: none;
	border-left-style: none;
}

.thumbnail span{ /*CSS for enlarged image*/
	position: absolute;
	background-color: #eeeeee;
	padding: 5px;
	left: -1000px;
	border: 1px solid #CCCCCC;
	visibility: hidden;
	color: black;
	text-decoration: none;
}

.thumbnail span img{ /*CSS for enlarged image*/
	border-width: 0;
	padding: 2px;
	width: 300px;
}

.thumbnail:hover span{ /*CSS for enlarged image*/
	visibility: visible; /*position where enlarged image should offset horizontally */
	z-index: 3000;
	left: -350px;
	top: -180px;

}