a#f01:focus{background-image: url(angermuende-burg-a.jpg);}
a#f02:focus{background-image: url(angermuende-burg-b.jpg);}
a#f03:focus{background-image: url(angermuende-burg-c.jpg);}
a#f04:focus{background-image: url(angermuende-burg-innen.jpg);}
a#f05:focus{background-image: url(angermuende-burg-skizze.jpg);}
