Timezone dropdown selector doesn't work in Firefox

The timezone selector works fine for user account settings, although I'm sure it uses another API.

works fine in ie6 and safari too; it's only broken in linux/ff3.0.4 & xp/ff 3.0.4

odd; i just diff'd the options between the date's timezone field and the account settings field, and there's no difference. i'll see what happens on a new installation and report back.

removing class .date-clear-block solves the issue for me. not sure if it's a conflict in our css or not; let me see in the zen and garland themes.

happens in garland and zen as well. must be a problem with the css in date.css for .date-clear-block.

It's this section in date.css causing the problem, and specifically content: " ";. If I comment out that line, it works fine. I would make a patch for it, but am not sure of other unintended side effects.

/*
 ** Markup free clearing that fixes unwanted scrollbars
 ** @see http://drupal.org/node/232959
 */
 .date-clear-block:after {
   content: " "; 
   display: block;
   height: 0;
   clear: both;
   visibility: hidden;
 }

Reading #232959: design issue - the scrollbar is shown on date cck field and it has wrong layout in Opera browser, looks like this was added as an alternative to clearfix. Must be a problem with that solution in relation to selects. Is there a reason we add the class to this select? Might be easiest to simply remove it from that form element.

Linked to this issue from #272209: clearflow: a better way to clear floats?.