/* CSS Document */

<style type="text/css">

.Gallery{
position: absolute;
/*Add a height attribute and set to largest image's height to prevent overlaying*/
}

.thumbnail img{
border: 1px solid white;
margin: 0 5px 5px 0;
}

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

/*.thumbnail:hover img{
border: 1px solid blue;
}*/

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

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

width: 800px;
height: 400px
}

.thumbnail:hover span{ /*CSS for enlarged image*/
visibility: visible; 
top: 0;
left: 100px; /*position where enlarged image should offset horizontally */

z-index: 50;
}

</style>