Thanks for the response Aaron!
here is the code:
POST /dateien/partei/panorama/110309_pam/aschermittwoch1.html HTTP/1.0
Host: www.xxx.xx
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, application/xaml+xml, application/x-ms-xbap, application/x-ms-application, */*
Accept-Language: de,en-US;q=0.5
Content-Type: application/x-www-form-urlencoded
UA-CPU: x86
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; InfoPath.1; .NET4.0C; .NET4.0E)
Cookie: __utma=37611442.xxxxxxxxxx.1303306266.1303312748.1303369519.5; __utmz=37611442.1303306266.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
X-Forwarded-Host: www.xxx.xx
X-Forwarded-Server: www.xxx.xx
Content-Length: 302
Via: 1.1 wwwproxy.xxx.xx:80 (squid)
X-Forwarded-For: x.x.x.x, x.x.x.x
Cache-Control: no-cache, max-age=259200
Connection: keep-alive
X-Forwarded-For: x.x.x.x
signed_request=xxxxxxxxxxxxxxxxxxxxg1wvZAlpvcJYmJRomgU4SG6UE.eyJhbGdvcml0aG0iOiJITUFDLVNIQTI1NiIsImlzc3VlZF9hdCI6MTMwMjUyMjA5NCwicGFnZSI6eyJpZCI6IjQwMTExMjk5MTUzNCIsImxpa2VkIjpmYWxzZSwiYWRtaW4iOnRydWV9LCJ1c2VyIjp7ImNvdW50cnkiOiJkZSIsImxvY2FsZSI6ImRlX0RFIiwiYWdlIjp7Im1pbixxxxxxxxxxx
Now what we need is an irule to change: POST /dateien/partei/panorama/110309_pam/aschermittwoch1.html HTTP/1.0 to: GET /dateien/partei/panorama/110309_pam/aschermittwoch1.html HTTP/1.0
and to delete the signed_request stuff at the bottom.
Thanks again for any help,
Chris