Radio buttons(URGENT)

[Angela D'souza]

I have two radio buttons and one text box,
<INPUT name="option" type="radio" value="true">
<INPUT name="option" type="radio" value="false">
<INPUT name="test" type="text" value="Test">
Now,
(1)How would I know that which radio button selected by user?
(2)When user selects the radio button which has value="false", how can I disable textbox and empty textbox?
Thanks,
Angela

[Vijay S. Rathore]

if(document.forms[0].option[0].checked){
document.forms[0].test.value = "";
}

[Angela D'souza]

thanks I got it...
Angela