Why do you put these hidden links in the shop?
<a style="display: none;" href="http://www.webdesigner-profi.de/">Webdesign</a><div class="jshop">
This is not good for the search engines. Search engines penalise you for doing that. You already have the copyright at the bottom, so why add hidden links??
Do you mind if I change the footer to say 'cart by...' instead of 'copyright..'