[ForenOpfer]

You should write your posts in english, otherwise they could be deleted by the mods here...

I customized the templates in every fixed style itself, so it works:

 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
        <tr>
         <td align="center" style="width:100%">
          <table cellpadding="2" cellspacing="1" border="0" style="width:800px">
           <tr>
            <td align="center" height="600px">
             <iframe src="images/advent/advent.htm" name="advent" style="width:100%; overflow:auto" height="600px" scrolling="no" marginheight="0" marginwidth="0" frameborder="1"><span class="normalfont">Sorry, you browser doesn't support frames.</span></iframe>
            </td>
           </tr>
           <tr>
            <td align="center">
             <br />&nbsp;&nbsp;&nbsp;-:[ <b>Advent Calendar</b> is copyright 2008 by <b><a href="http://www.php-unlimited.de">php-unlimited</a></b> ]:-&nbsp;&nbsp;&nbsp;
            </td>
           </tr>
          </table>

To work with a 100% code won't work 'cause of the background image. You'll must have an image resizer to resize the background in the same width/length ratio.