autocomplete

I need a better autocomplete field for a Drupal project. Has somebody tried to use the autocomplete jquery plugin with drupal in any way? Any integration with the actual autocomplete functionality already found in Drupal?

I'm facing a problem related to the use of the jframe jquery plugin (http://plugins.jquery.com/project/jframe) along with the autocomplete javascript in Drupal.

I'm using jframe to load some frames within a drupal page and in one case one of the frames loads a drupal form which contains an autocomplete field. That form element doesn't work properly. However, the same form loaded within another frame from the beginning works fine.

I've no idea where to begin to look for the problem. Any help will be very much appreciated.