Yii Cgridview Selectionchanged

Hi

I have a zii CGridView displaying dynamic rows from a database table.
When the user selects a new row how do I update some Labels on the Page with fields from the row selected.

I probably need to use a combination of 'selectionChanged', $.fn.yiiGridView.getSelection(id) and Javascript but I'm not sure how as I'm new to this.
Any ideas, examples.

thanks