Online Quotation Tool

I need an online quotation tool to be placed on our website (translation services). Actually, a simple pricelist generator, where clients will have to choose source language from a list, target language from a list, select project type (text translation, website localization, software localization), select area (technical, medical, business, etc.), click enter and the program should give a new page with thankyou and a price (es: 0,014 Euros per original keystroke), together with an invitation to contact us with the original text in order to have a final forfait quote. We already have something like this at [login to view URL] nade in javascript. We need something easier to use since every time we want to add a new language we don't want to re-build the whole javascript, but have an interface where to put language name and prices..