Also showing the glow effect shown here (in Gillenwater notes). Take a look again at that code.
Try the Google API links, or get the whole code from Getting Started page Section 3. You will need the CSS to make everything work, so I recommend you do that. And maybe take a look at the list of classes you get.
Here are their comments from the jQuery UI code:
The datepicker is tied to a standard form input field. Focus on the input (click, or use the tab key) to open an interactive calendar in a small overlay. Choose a date, click elsewhere on the page (blur the input), or hit the Esc key to close. If a date is chosen, feedback is shown as the input's value.
Note then if you want to get another theme, just download it, and replace "themename" in the CSS link with the one you downloaded. Mine is now Chocolate Mint (CSS folder name is mint-choc).
<link type="text/css" href="css/mint-choc/jquery-ui-1.8.16.custom.css" rel="Stylesheet" />
I also recommend keeping their directory structure (see above link) and putting your file in the folder that unZips. So this page now resides at:
http://www.lasalle.edu/~beatty/430/jquery_ui/jqui_date.html