Hallo Christian,
das hilft aber auch nichts:
<table style="HEIGHT: 25px" cellSpacing="0" cellPadding="0" border="1">
<tr>
<td height=10>
<form method="POST" action="">
<input type="submit" name="B1" value="" class="menubutton" style="background-image: url('bilder/menu/start.gif'); margin-bottom: 0px"></form></td>
<td height=10>
<form method="POST" action="map.php">
<input type="submit" name="B1" value="" class="menubutton" style="background-image: url('bilder/menu/map.gif'); margin-bottom: 0px"></form></td>
<td>
<form method="POST" action="">
<input type="submit" name="B1" value="" class="menubutton" style="background-image: url('bilder/menu/stadt.gif'); margin-bottom: 0px"></form></td>
<td>
<form method="POST" action="">
<input type="submit" name="B1" value="" class="menubutton" style="background-image: url('bilder/menu/forschung.gif'); margin-bottom: 0px"></form></td>
<td>
<form method="POST" action="">
<input type="submit" name="B1" value="" class="menubutton" style="background-image: url('bilder/menu/statistik.gif'); margin-bottom: 0px"></form></td>
</tr>
</table>
Andy