jquery disable form submit on enter

You can disable button on Submit but user can Enter to submit.



So you i use this code:



I have the following javascript in my page which does not seem to be working.
$('form').bind("keypress", function(e) {
if (e.keyCode == 13) {
e.preventDefault();
return false;
}
});


I'd like to disable submitting the form on enter, or better yet, to call my ajax form submit.