2 This hides all but the first board in each category and expands them when clicked on.
3 HTML renderers incapable of CSS2 will just display it all.
7 tbody
tr:first-child
a::after
{content: ' ' url
(/boards/imglib/expand_tree.png)}
8 tr:first-child:target
a::after
{content: ' ' url
(/boards/imglib/collapse_tree.png)}
11 tbody
> tr:not
(:first-child
)
14 tbody
> tr:first-child
+ tr
,