[jQuery] alerting the value of radio button onfocus

[stef]

that's what im trying to do - when a radio button is clicked, show its
value. i have the code below, which i dont think is the best way to go
about it. it always alerts "undefined". my reasoning is: when the
document has loaded, and an input element in the div with id 'test' is
focussed, show an alert of the value of the currently checked radio
button.

 $(function(){
        $("#test/input").focus( function() {
        alert($("[EMAIL PROTECTED]@checked]").value);});

 });

strangely enough when i change "input" to "radio", nothing happens?

thanks for any tips on how to make this work :-)