problem with custom PM page

[squishi]

I have created a special page that shows the recipient, title and message input fields to send a new PM.
It works great.

Now I want the user not to be able to change the title and recipient field.

So I added the red code to the forms:

<input type="text" id="pmrecips_txt" name="recipients" size="25" tabindex="1" value="Admin" disabled />

and

<input type="text" class="bginput" name="title" value="PM TITLE" size="30" maxlength="85" tabindex="1" disabled />

Looks just like I want it to be. But when I now click on the send button, vbulletin tells me that the title and message body was not correctly filled out.

Please complete both the subject and message fields.

When I remove the "disabled"s, the sending of the PM works again.

How do I get this to work? Why is it not working in the first place?

--------------- Added [DATE]1217580997[/DATE] at [TIME]1217580997[/TIME] ---------------

Okay. I managed to get this to work by adding two hidden fields and by turning the visible form fields into "fake" ones.

I am still interested why this was not working, though.