Cheeso provided me with an answer via email, which I wanted to share here for the benefit of others. Despite the solution not working as expected, I am currently investigating why.
By modifying this line
$('div p a[href="#"]').click(function() { expando(this); });
to the following:
$('div p a[href="#"]').click(function(ev) { ev.preventDefault(); expando(this); });
...it is believed that the scrolling to the top behavior should cease.
When a user clicks on a link containing a hash character, the browser typically scrolls to the corresponding location on the page where the fragment marker is positioned, similar to a bookmark. For instance, in the URL: http://en.wikipedia.org/wiki/Causes_of_WWII#Militarism, clicking on the link will direct the browser to that specific section.
In the scenario described in this context, the href attributes consist of only # characters, indicating an empty fragment. This may cause the browser to default to scrolling to the top of the page.
To prevent this, adding ev.preventDefault() within the click handler can help mitigate the issue. This jQuery technique suppresses the standard handling of the click event and prevents the browser from attempting to scroll to a non-existent anchor point.