I think your #quickref_links click events need an 'event.preventDefault()' to keep the browser from jumping up to the top of the page when you switch between tabs.
I don't think the problem is the click event sending you to the top of the page, its the fact that the textarea is out of sight and its being modified. The browser will then focus it for you, which scrolls you up. Only way I can think of to solve this would be to make sure the textarea is always visible (even if not for the user), which is more work than its worth I'm afraid.