There is a "pseudo-style" called :hover which causes the behavior you want.
You can add this to the end of any link in your stylesheet, specify the CSS effects desired, and they will be applied on hover. (This is supposed to work on anything, but IE only supports it on links, so there's not much point trying it on anything else.)
You can see an example at the top of a stock stylesheet:
Code:
a:link, #navEZPagesTOC ul li a {
color: #3300FF;
text-decoration: none;
}
a:visited {
color: #3300FF;
text-decoration: none;
}
a:hover, #navEZPagesTOC ul li a:hover, #navMain ul li a:hover, #navSupp ul li a:hover, #navCatTabs ul li a:hover {
color: #FF0000;
}
Links are blue, recently visited links are also blue, and hovering links are red.
a.category-top is a good place to start for styling category links.
Use
a.category-top:hover {
}
for hover effects.