Making a input text field readonly..

Hi everyone,
I am trying to make a text input field in a form readonly when I select a particular radio button.
I used the foll. code to for this functionlity:
function changeTextField(typeOfRadioButtonClicked){
if(typeOfRadioButtonClicked == 1){
document.<formName>.<fieldName>.readOnly = true;
}
else if(typeOfRadioButtonClicked == 2){
document.<formName>.<fieldName>.readOnly = false;
}
}
I do not want to disable this text input field as I need to send these value to the server for further processing.
This works perfectly fine in IE but does not work in Netscape.
Can anybody give me hints as to how I can this functionality in Netscape?
Thank you
Chuck

I can only think of one "messy" way...that is to fire a focus event on each textfield, then set a variable from the radio button event so you can check against it with the focus event. Then you could just blur them out of the textfield. Ugly but it would probably work.

use this ..
<input type=text name=txtfld onFocus="blur()">

This will solve your problem
Thanks