[TYPO3-english] Form wizard readonly/disabled

[Stig Kjeldsen]

I'm using TYPO3's form wizard. Is it possible to make an input field 
readonly or disabled?

I need this:
<input disabled="disabled" value="xxx" type="text">
or
<input readonly="readonly" value="xxx" type="text">

This is my form wizard so far:
TripCode | TripCode=input | {GPvar:tripcode}
  | formtype_mail=submit | send
  | html_enabled=hidden
  | subject=hidden


Best regards

Stig Kjeldsne