I have the following HTML code:
I think you fire the submit event before the DOM is actually loaded, because if I try it, this code works:
$(document).ready(function(){
// Submit handler, to prove everything works fine
$('#umfrageForm').submit(function(){
alert('hi');
return false;
});
// Fire the submit event
$('#umfrageForm').submit(); // alerts 'hi'
});
See: jsFiddle