The live() method is one great new feature of jQuery 1.3, however it does not support binding of the event ‘submit’ of forms.

$('form').live('submit', function() {
  // your callback
});

This can be simulated by a simple workaround on the selected objects. The click() event can be bound using the live() method. The workaround is simple: do not bind the submit of a form, but the click on any submit button within it.

$('input:submit', $('form')).live('click', function() {
  // your callback
});