Embedded images not shown in Google Chrome
Is that an exact copy-and-paste?  It isn't valid HTML.  Try

&lt;a href="content/httpwwwgooglede#content-top" title="Hier geht's zur Homepage von http://www.google.de"&gt;
&lt;img width="404" height="304" border="1" title="" alt="Hier gehts zur Homepage von http://www.google.de" src="http://www.example/external/shots/get.thumbshots.ru/%3Furl=www.google.de%26size=m%26v=1%26lang=en%26" /&gt;
&lt;/a&gt;

I think I fixed everything...

Whenever you have browser differences, run your page through http://validator.w3.org/ and fix the errors first.