$(document).ready(function(){

	
	$('#primaryFirstName').change(updateName());
	$('#primaryMiddleName').change(updateName());
	$('#primaryLastName').change(updateName());

});

function updateName() {
	$('#guestName').val(ucfirst1($('#primaryFirstName').val()) + " " + ucfirst1($('#primaryMiddleName').val()) + " " + ucfirst1($('#primaryLastName').val()));
}

function ucfirst1(str) {
	if (!str) str = 'Name';
	return str.charAt(0).toUpperCase() + str.substring(1);
}