[jQuery] adding jQuery causes my page to flash/blink on load

Hi when I added jquery-1.3.2 and jquery.ui-1.7.1 to my page here http://ssmedgroup.com/beta/index.html it causes my page to flash/blink as the browser redraws the page on load. (click on the navigation tab; you'll see what I mean.) It happens on safari 4, chrome (though less so), and IE6&8.

[jQuery] UI Datepicker: block out weekends?

using the latest jquery UI datepicker, is it possible to block out certain days, like Sat and Sun. our office doesn't open on the weekend, so there's no point in letting people pick those days for appointment.