submit form on enter: This function will submit a form on enter when called from onkeypress. - From http://snippetlib.com/jquery/submit_form_on_enter

submitViaEnter.js

function submitenter(myfield,e) {
	var keycode;
	
	if (window.event) {
	  keycode = window.event.keyCode;
	}
	else if (e) {
	  keycode = e.which;
	}
	else {
	  return true;
	}
	
	if (keycode == 13) {
	   myfield.form.submit();
	   
	   return false;
	} else {
	  return true;
	}
}