I need to make a div visible but unreactive on the page..

Hi Guys,
Me again, dynamic drive will be getting a mention on the site once its finished due to all the help Im getting from this forum, it truly awesome.

The problem is I have styled some radio buttons, I have then styled the labels to appear over the radio buttons, giving the appearence of labelled buttons.

Trouble is the div that contains the label is actually blocking the functionality of the radio button... the button works around the edges but not in the middle..

Is there any method of making a div visible but invisible to the mouse clicks?
http://www.test.steptoes.co.uk/produ...1ZT0wNDE.ghtml

Thanks for your time.