.thumbnail{
position: relative;
z-index: 0;
}

.thumbnail:hover{
background-color: transparent;
z-index: 50;
}

.thumbnail span{
	/*CSS for enlarged image*/
position: absolute;
	background-color: #ffffff;
	padding: 2px;
	left: -1000px;
	border: 1px dashed gray;
	visibility: hidden;
	color: black;
	text-decoration: none;
	top: 25px;
}

.thumbnail span img{
	/*CSS for enlarged image*/
border: 5 solid #768E9A;
	padding: 2px;
}

.thumbnail:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
top: 20;
left: -200px; /*position where enlarged image should offset horizontally */

}