UI Datepicker slowness

UI Datepicker slowness


I am using the UI Datepicker plugin, and it runs somewhat slowly in
IE7. When you click on the calendar or focus in the input box to
activate the calendar, it takes about 1-2 seconds for the calendar to
open. And once open, clicking around the months and days takes about
1/2 second to respond. In Firefox, there are no problems, it runs
quickly.
Any idea why this is slow in IE7?
Thanks for any help.