Popup Attribute Selector

Hi Guys

I've found that attributes seem to be a big problem with customers not choosing one and the default one not being the right one they wanted, so what i was wondering was whether it would be possible to use the lightbox effect to open a popup so when someone clicks on the add to cart button of a product the attribute controller opens for the customer to choose one of the attributes available to them for that individual product.

One example i have found of this method is on the just-eat website i have posted an image here so you can see what i mean.
[IMG]http://img88.imageshack.us/img88/499/sampleattribute.gif[/IMG]

This will be a simple problem for someone with a little more experience with zen-cart and the lightbox

Thanks
Brad