So Ulli hier ist die Galerie für 20 Bilder ..muss nur die Bilder   URL zugeben 
a.bild1 { display:block; background-image:url(
Hier die S/W); width:350px; height:300px;}
a.bild1:hover { background-image:url(
Hier die Bunten  ); width:350px; height:300px; }
unten in  die Tabelle  bleibt alles so wie es ist !
Hatte  auch einen Titel für die Galerie gemacht ..bei <h1>Lüneburger Heide </h1>...wenn du  das nicht haben willst kannst ruhig wegmachen 
Code: Alles auswählen
<head>
<title>Lünenbürger Heide  </title>
<style type="text/css">
a.bild1 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild1:hover { background-image:url(url ); width:350px; height:300px; }
a.bild2 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild2:hover { background-image:url(url ); width:350px; height:300px; }
a.bild3 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild3:hover { background-image:url(url ); width:350px; height:300px; }
a.bild4 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild4:hover { background-image:url(url ); width:350px; height:300px; }
a.bild5 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild5:hover { background-image:url(url ); width:350px; height:300px; }
a.bild6 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild6:hover { background-image:url(url ); width:350px; height:300px; }
a.bild7 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild7:hover { background-image:url(url ); width:350px; height:300px; }
a.bild8 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild8:hover { background-image:url(url ); width:350px; height:300px; }
a.bild9 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild9:hover { background-image:url(url ); width:350px; height:300px; }
a.bild10 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild10:hover { background-image:url(url ); width:350px; height:300px; }
a.bild11 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild11:hover { background-image:url(url ); width:350px; height:300px; }
a.bild12 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild12:hover { background-image:url(url ); width:350px; height:300px; }
a.bild13 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild13:hover { background-image:url(url ); width:350px; height:300px; }
a.bild14 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild14:hover { background-image:url(url ); width:350px; height:300px; }
a.bild15 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild15:hover { background-image:url(url ); width:350px; height:300px; }
a.bild16 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild16:hover { background-image:url(url ); width:350px; height:300px; }
a.bild17 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild17:hover { background-image:url(url ); width:350px; height:300px; }
a.bild18 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild18:hover { background-image:url(url ); width:350px; height:300px; }
a.bild19 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild19:hover { background-image:url(url ); width:350px; height:300px; }
a.bild20 { display:block; background-image:url(url); width:350px; height:300px;}
a.bild20:hover { background-image:url(url ); width:350px; height:300px; }
</style>
</head>
<body>
<h1><center>Lüneburger Heide </center></h1>
<table align="center" border="0"cellpadding="3" cellspacing="3">
 <tr>
  <td><a class="bild1" href="#"></a>     </td>
  <td><a class="bild2" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
            <tr>
  <td><a class="bild3" href="#"></a>     </td>
  <td><a class="bild4" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild5" href="#"></a>     </td>
  <td><a class="bild6" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild7" href="#"></a>     </td>
  <td><a class="bild8" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild9" href="#"></a>     </td>
  <td><a class="bild10" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild11" href="#"></a>     </td>
  <td><a class="bild12" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild13" href="#"></a>     </td>
  <td><a class="bild14" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild15" href="#"></a>     </td>
  <td><a class="bild16" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild17" href="#"></a>     </td>
  <td><a class="bild18" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
  <td><a class="bild19" href="#"></a>     </td>
  <td><a class="bild20" href="#"></a> </td>
 </tr>
 <tr>
<td><h2><center>Lüneburger Heide
          </center></h2></td>
          <td><h2><center>Lüneburger Heide
          </center></h2></td>
           </tr>
 <tr>
 </table>
</body>