I merged my little script with the fine layout from the other page. Please try again http://mitglied.lycos.de/manske/wiki/test.php (Sorry for the banner, I can't help it)
I included the English and German intro, as well as the localized search function. The word "Search" and the intro will appear in English for all other browser settings, as English is the default for languages that don't have an intro text of their own.
Known problems: * Neutral or localized logo is needed * Maybe an unobstrusive link in or close to the intro to the English wikipedia, as an anchor for anyone who is stuck on a foreign PC ("This page in English") * Works only for Phase III wikipedias (.org)
Magnus