Here's how you can change the layout of CCK radio widgets to inline using jQuery
<?php
$(document).ready(function(){
$("form#node-form div.form-item div.form-radios div.form-item").css('display', 'inline');
});
?>In my case, I wanted to change this layout for only one form. Unfortunately, there were not enough unique selectors assigned to the form elements, so I used a jQuery attribute selector to limit the match by the form's action.
<?php
$(document).ready(function(){
$("form#node-form[@action='/MYPATH'] div.form-item div.form-radios div.form-item").css('display', 'inline');
});
?>