Any suggestions?

Does anyone know the best way I can do the following?

My client sells upvc windows, and would like visitors to the site to be able to do a quote online.
The window prices are available in matrix format and are available in excel format, so you put a width and a height in and it gives you a price, then there are many other variables like colour and glass.
I have made a basic JavaScript program that can produce a price but its doesn’t use a matrix but a m2 formula (but its doesn’t work close enough to the matrix)
Any ideas?

If you are looking for a good grid/table based on a javascript library, I have seen and heard good things from ext js:

http://extjs.com/

although I have never personally used it.

I’ve used ext to make a data grid, although the data was simpler, just the results of a database query (filtered by the logged-in user’s username, and optionally by a search term). If you’ve got your data, then it shouldn’t be too difficult to load it into a data grid, whether ext or mootools.

I will have a look at Ext, looks good thanks for your advise, may be a task too big!

Just a note, as far as I can tell ext is best used for interactive web applications. For simple display of data, jquery or mootools might be a better choice.