I have got a form that posts values to a page in a wizard. When i'm loading this form in a Iframe everything is working fine in Firefox, it will get me to the second step of the wizard and maintains the values i filled in. When im testing this in Internet Explorer i am not getting to the second step, instead of that it returns me to the first step of the wizard with all fields being blank. When i check this in Fiddler i see that im getting a different response when i'm posting the form in the Iframe from Firefox compared to Internet Explorer. How can i make this work for all browsers? What am I doing wrong?

This is what i get back from Fiddler:

Firefox

Post:

Ressult Protocol    Host    URL Body    Caching Content-Type    Process Comments    Custom  
1   302 HTTP    www.dmg.eu  /brugman/budgetplanner/aanmelden.php    0   no-store, no-cache, must-revalidate, post-check=0, pre-check=0  Expires: Thu, 19 Nov 1981 08:52:00 GMT  text/html; charset=UTF-8    firefox:6116    

Get:

#   Result  Protocol    Host    URL Body    Caching Content-Type    Process Comments    Custom  
2   200 HTTP    www.dmg.eu  /brugman/budgetplanner/ 40.677  no-store, no-cache, must-revalidate, post-check=0, pre-check=0  Expires: Thu, 19 Nov 1981 08:52:00 GMT  text/html; charset=UTF-8    firefox:6116

Internet Explorer

Post:

Result  Protocol    Host    URL Body    Caching Content-Type    Process Comments    Custom  
73  302 HTTP    www.dmg.eu  /brugman/budgetplanner/aanmelden.php    0   no-store, no-cache, must-revalidate, post-check=0, pre-check=0  Expires: Thu, 19 Nov 1981 08:52:00 GMT  text/html; charset=UTF-8    iexplore:536    

Get:

Result  Protocol    Host    URL Body    Caching Content-Type    Process Comments    Custom  
74  302 HTTP    www.dmg.eu  /brugman/budgetplanner/ 0   no-store, no-cache, must-revalidate, post-check=0, pre-check=0  Expires: Thu, 19 Nov 1981 08:52:00 GMT  text/html; charset=UTF-8    iexplore:536    

Hope someone knows what the diff is :).