Iceblue: CSS-Galerie Code problem mit Content

<style type="text/css">

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

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

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

.thumbnail:hover img{
border: 0px solid black;
}

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: lightyellow;
padding: 5px;
left: -1000px;
border: 0px dashed gray;
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: 0;
left: 0px; /*position where enlarged image should offset horizontally */
z-index: 50;
}

</style>

<div class="gallerycontainer">
<a class="thumbnail" href="#thumb"><img src="http://img.webme.com/pic/s/soft-air-rangers/archangel_profil.jpg" width="200px" height="170px" border="0" /><span><img src="http://img.webme.com/pic/s/soft-air-rangers/archangel_profil" /><br /></span></a>
</div>