How to disable a radio buttons in asp.net

[nudrat]

Hi All,
I have two groups of radion button sets. based on selection of one group made the other group radio buttons disable. suppose some one has selected one radion button from a group, so one button will get disabled from other groups.
i have written following codes.
actually its working, but its not looking good.
sub checkChanged(2 parameterrs are here)

{
       if (radiobutton1.checked)
          {
                            radiobutton2.checked=true
                            radiobutton2.attribute.add("disable","true")    
            } 
}

[kenobewan]

Define not looking good...

[Frinavale]

What is not working?
Could you please explain what is going wrong?