After switching from HTML4 DOCTYPE to XHTML 1.0 I’ve come across a problem with Firefox. Firefox (Opera and Internet Explorer don’t have problems with this) puts the underline under hyper linked images, which I don’t want (and probably neither do you). But from what I’ve read, it’s not actually a problem, it’s FF following the specifications. But it still needs to be solved :).
Example of problem in screenshot:
Solution
a img { float: left; }
or try this:
a img { display:block; border: none; float: left; }