Please view this link [url removed, login to view]
When you select any item from the available items for sale the price difference is deducted or added on the right side floating menu. I've already created the dynamic forms and menu's. What i'm failing is the logic of how to get the currently selected radio button so that i can correspondingly get the difference from the other items of the same group.
160GB 5400 RPM SATA
160GB 7200 RPM SATA [+£82]
250GB 5400 RPM SATA [+£99]
200GB 7200 RPM SATA [+£132]
If i have the first radio button selected how would i get to know which one is selected right now from this particular group of radio buttons. I need the exact functionality done as displayed on the link (Just the +/- part of the adding of prices) Please send me a sample or a logic and i'll give the project to you.