Accordions: Custom URL link not working

Maybe I just don't understand how this is supposed to work. I tried reading the documentation and I didn't see anything about how to link to a specific accordion heading and open it. I tried http://adventurouschild.com/NEW/purchasing/?id=288#ui-id-2 to open my second accordion tab, but that doesn't seem to work. Also I tried the ID of the div like this http://adventurouschild.com/NEW/purchasing/?id=288#ui-id-1462987091148 But that had no effect either. Can I get some assistance/instruction on how to make this work? Thanks!