quote:Originally posted by spacecraft
I really need proffesional advice.
Well if you really need professional advice they are plenty of paid consultants to be found :) Here's mine gratis.
The iframe method is a bit passÃ© now that 90% of standard browsers (desktop ones) support access via XMLHttpRequest, and most low-level devices that don't support it struggle with (i)frames anyway, so I'd suggest XMLHttpRequest. It's also easier to manage multiple simultaneous requests. If you are pulling content from external services you'll need a server-side proxy anyway as modern devices don't let you access the contents of an (i)frame if the domain is different to the main page.
Wrox's Professional Ajax
covers the different options at some length and gives a fuller picture of their pros and cons.
Joe (Microsoft MVP - XML