[jQuery] focus doesn't seem to be working in FF3

[jQuery] focus doesn't seem to be working in FF3


I have the following line in a login form. Focus doesn't seem to be
working at all. It worked previously before upgrading to FF3. And it
appears to be working in IE 7. I suppose it could be FF3, but just
wanted to let you guys know, just in case.
$("#UserEmailAddress").focus();