Hi Armin, there is a solution called *html conditional comments* http://www.quirksmode.org/css/condcom.html to use a layout completely based on DIV available on MS/IE and Mozilla/FireFox.
I've put html conditional comments, in section <HEAD> of map.phtml. I wrote a CSS only available using MS/IE, called iefix.css, while Mozilla/FireFox use layout.css I tryed map.phmtl using Mozilla/FireFox and MS/IE (i changed width(880) and heigh(700) in javascript:openNew into the file index.html.) they work. Is possible write in your WebDAV directory? to send the files. Luca
