preilly wrote:

This is NOT the case.

If you have a device that doesn't support Javascript we don't collapse the sections.
For example: If I set my user-agent to "Yahoo Slurp e.g., Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)" and request: http://en.m.wikipedia.org/wiki/Buffalo_nickel
I get a page without the sections collapsed.

I suppose that we could tweak this to only collapse the sections if we detect javascript as being enabled.

— Patrick

It is generally possible to disable JavaScript in browsers that support it, so I'd recommend only collapsing if JS is on. (This can be done by adding a CSS rule in a <script> block pretty easily I think)

This should be as simple as adding a bit of javascript that adds to the body tag a 'jsEnabled' class.

Then adding the following css rules:
button.show {
display: none;
}

.jsEnabled button.show {
display: inline-block;
}

.jsEnabled .content_block,
.jsEnabled .section_anchors,
button.section_heading.hide {
display: none;
}

Addressed in r111651.