Pop up list

Greetings,

I would like to create a box with two fields - one to describe the field (e.g. price) and another to desrcibe the selection (e.g. $500). On roll over, I would like the box to move upward and reveal a list of user choices (i.e. prices). After the user selects one of the prices, the box moves down to its original position and the user’s selection is populated, displayed in the box.

Any suggestions would be greatly appreciated.

Best regards,

jas