text_field_with_auto_complete scrollbars

Greetings,

I am using text_field_with_auto_complete to help narrow a long list of
subject headings, about 10,000 in all. However, I wish to provide a
scrollbar so that users can scroll through a list if there are too
many results returned in the drop down. Has anyone been able to do
this? I have and still am searching around but without too much
success.

Regards,
John