I was wondering what is the default font is for
<input type=submit> tags?
I am running Mac OS 10.6 with Firefox 3.6. But the font is the same for Safari 5 as well.
Pic of default styled input button is here: http://twitpic.com/2388tp
Default form control styles are generally the same as the operating system as they tend to be rendered by the OS not the browser.
My OSX uses font-family: 'Lucida Grande';
You can check yours using the web inspector in Safari - you have enabled it?