.gallerycontainer{
float: left;
position: relative;
width:341px;
height: 387px;
margin: 0;
background:none;
border-top: 20px solid #900;
}


.first_img {margin: 0 0 0 0}

.thumbnail {}

.thumbnail img{ margin: 2px 2px 0 0

}

.thumbnail:hover{

}

.thumbnail:hover img{
padding:0;

}

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
padding: 0;
visibility: hidden;
}

.thumbnail span img{ /*CSS for enlarged image*/
padding:0

}

.thumbnail:hover span{ /*CSS for enlarged image*/
visibility: visible;
position:relative;
top:-387px;
float: left;
padding:0; 
margin:0;
}