Add two textfields as atribute. Prestashop 1.5.x

Avg Bid (USD)
Project Budget (USD)
$30 - $35

Project Description:
I would like to add two text fields as customization atributes for some of the products of my store.

User only could activate the fields clicking in a droptext option or checkbox* to activate both fields.
(So also price increases when activated checkbox or chossen droptext option.)
*Like this example:

*Must be compatible with PS 1.5.x (multishop compatible)
*The first text field is for names (from 0 up to 15 char), the second one for numbers 0,1 or 2 char.

Extra: (Will be considered to pay extra or to chose the proper developer)
1.- Is prefered Droptext than checkbox
2.- if added funcionality of checking if at least one of the fields has been filled up
(Only when the checkbox/dropmenu is activated ).

Additional Project Description:
12/07/2012 at 22:16 CET
>>atached example form

Skills required:
Javascript, Prestashop, Shopping Carts, SQL, Website Design
Additional Files: example.html example_updated.html
Hire palermuke
Project posted by:
palermuke Thailand
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