.contenitore{
position: relative;
height: 590px;
width: 490px;
/*Add a height attribute and set to largest image's height to prevent overlaying*/
}

.thumbnail img{
	border: 0;
	}

.thumbnail:hover{
	background-color: transparent;
	text-decoration: none;
}

.thumbnail:hover img{
	border: 0;
	border-collapse:collapse;
	}

.thumbnail span{ /*CSS for enlarged image*/
	position: absolute;
	background-color: #d5ebf8;
	padding: 5px;
	left: -1000px;
	border: 1px dashed #d5ebf8;
	visibility: hidden;
	color: #069;
	text-decoration: none;
	width: 340px;
	text-align:  center;
	}

.thumbnail span img{ /*CSS for enlarged image*/
	border-width: 0;
	border-style: none;
	height: 250px;
}

.thumbnail:hover span{ /*CSS for enlarged image*/
	visibility: visible;
	top: 250px;
	left: 200px; /*position where enlarged image should offset horizontally */
/* z-index: 50; */
}

img.meri {
border-style:none;
float:center;
font-family:Verdana, Arial, Helvetica, sans-serif;
font-size:10px;
height:80px;
}