/* credits to http://www.dynamicdrive.com */

.gallerycontainer
{
    position: relative;
    /* 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;
}

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

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

/* CSS for enlarged image */
.thumbnail:hover span
{
    visibility: visible;
    top: 0;
    left: 300px; /*position where enlarged image should offset horizontally */
    z-index: 50;
}