Is it possible that there is a problem with the getRequestBody function and having a checkbox on the form?
The function creates a string that sends the posted data to the server; Therefore an array with every control is iterating and the value of that control is appended to the string.

I noticed that when i have a <input type="checkbox" value="value"/>
the posted value of my checkbox is always set. Even if my checkbox isn't checked. Isn't it so that a checkbox only posts the value when the checkbox is checked or is the problem somewhere else?

I'm assuming you're using the example that sends the information in textboxes to the server?

The getRequestBody() function was only written to deal with textboxes, not checkboxes. You'll have to modify it for use with checkboxes. What you should do is check to see if the input type is checkbox, then check to see if it's checked. Only if the checkbox is checked should the value be sent.

Nicholas C. Zakas
Author, Professional JavaScript for Web Developers (ISBN 0764579088)
http://www.nczonline.net/

Oh i see :)
I used that code in a form where i use textarea en <select> items. I works fine on them :)
I thought it was a method i could use for every form.

I'll change so it works with the checkboxes. It will probabbly be the same problem with radio buttons... Didn't check but i guess it will.

When i'm done, i'll post the script here.