SFPL Login Bookmarklet Generator

The San Francisco Public Library web site is excellent, but has one painful requirement: frequent logins. For so many things, it repeatedly asks you for the last nine digits of your library card, plus your PIN number. It gets old fast.
 
If you have a JavaScript-capable web browser, you can use a JavaScript bookmarklet to fill in this form for you, however many times they ask, with the click of a button. All you have to do is:
 
Provide the information requested below to generate a JavaScript bookmarklet you can drag to your menu bar and click whenever SFPL wants your PW/PIN.
 
To generate your bookmarklet, enter the following information.
Library card number: 
 21223 
Enter the last nine digits of your library card number.

PIN: 
 
PIN help from SFPL site.
   
Your information is used once to generate the bookmarklet, and is not stored in any way.