I need to enter invoices using browser.

I looked into netledger and quickbooks web applications. Netledger does not allow edit all invoice rows. Quickbooks load too slowly and has very complicated javascript code.

Are there other examples of invoice entry avaliable ?

I think I can force using only the latest browser to simplify my code.

I'm thinking to use two XML data islands: one for invoce header and second for rows.

Those data islands are bound to input controls using IE data binding. Row data island is bound to table element. However, for rows I need to emulate the whole grid: down arrow must move to next row, up arrow to previous row, enter to next cell etc.

Is this a good idea ? Are samples about this kind of entry ?