430413 calculating options oscommerce shop

[login to view URL] on the far right you see: Frame Calculator Enter the width and height of the frame you want into the calculator and click the Calculate button to see the price in the box below. it will calculate widht x height and something else , we have a excell file for that with all summs in. other shops you can see the function is here: [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] what our previous programmer made was this: [login to view URL] if you add item to the cart you see what i mean but i want that integrated in the shop, not as separate script.