<style type="text/css">

.gallerycontainer{
position: relative;
/*Add a height attribute and set to largest image's height to prevent overlaying
top: 200px;
left: 500px;
width:770px;
height:396px;
margin:200px auto 0 auto;
border:1px solid #aaa;
*/
}

.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;
background-color: white;
padding: 5px;
left: -1000px;
/* border: 1px dashed gray; */
border: 1px;
visibility: hidden;
color: black;
text-decoration: none;
}

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

.thumbnail:hover span{ /*CSS for enlarged image*/
visibility: visible;
top: 300px;
left: 550px; /*position where enlarged image should offset horizontally */
z-index: 50;
}

</style>
