$().ready(function() {
	if ($.browser.msie) {
		$('form#voucherSelect').click(toggleSubmit);
	} else {
		$('form#voucherSelect').change(toggleSubmit);
	}
	
	toggleSubmit();
});

function toggleSubmit() {
	$('form#voucherSelect input#submit').attr('disabled',true).addClass('disabled');
	$('form#voucherSelect select').each(function() {
		if ($(this).val() > 0) {
			$('form#voucherSelect input#submit').removeAttr('disabled').removeClass('disabled');
			return false;
		}
	});
}