Select a radio button

Hi everybody. I guess this would be very simple for people who know java... (not me, of course)

In a form, I want to select a radio button when the user type in a text box. I'm using a onclick="" in the form code to launch the java script, but have know idea about the java.

Thanks a lot for your help, as always...

PS: anyone knows where I can find a good java manual to study?

In JavaScript use onchange(your function) in <input> tag of text box.

yes. actually my problem is that I don't have nothing to put in the "your function" part =P that's what I really need, a function in java that selects the radio. yeap I don't know much java.

thanks for your help