YUI JavaScript : Slowest Code Ever?

Would you believe it possible, that instead of using client-side JavaScript (YUI in this case - Yahoo User Interface code) to do something as simple as format a couple-hundred row table and offer client-side table data sorting (via column-header clicks), it is faster to do all of this via:a round-trip to a webserver,...where the webserver also roundtrips to a database server (a totally different