Hidden submit buttons and IE

Internet Explorer has this annoying bug that breaks submit-on-enter-key if the submit button is not visible during page load. Setting it to display:none and using position:absolute;left:-5000px both cause this bug to appear.

Here's one solution (assumes all submit buttons have a class="submit"):

<!--[if IE]>
<style type="text/css">
.submit {
 height:0;
 width:0;
 overflow:hidden;
}
</style>
<![endif]-->

This doesn't work in Firefox, so make sure you sniff for IE when applying this technique.