[jQuery] jScrollPane: hide an arrow at end of content?

i was wondering if anyone has a quick and easy way to hide an arrow if you are at the beginning or end of the scrollable content. for instance i would want the top arrow to not be visible at first, because there is no content above it. and when i reach the end of the content, i would like the

[jQuery] jScrollPane.. maintaining position after expanding content

Hello, I am relatively new to jQuery and wasn't a javascript guru before i started it, so forgive me if the solution i am looking for is blindingly obvious in the end. i have a block of content that contains a bunch of collapsed divs. on clicking an icon, the related div expands to show more