function submitForm(id) {
	$('#' + id).submit();
}

function submitFormOnClick(id) {
	submitForm(id);
	return false;
}

function limitUploadFileType(selector, supportTypes, notSupportMessage) {
	$(selector).change(function() {
		var value = $(this).val();
		var type = value.substring(value.lastIndexOf('.') + 1).toLowerCase();
		var isSupport = false;
		for (var i = 0; i < supportTypes.length; i++) {
			var supportType = supportTypes[i].toLowerCase();
			if (type == supportType) {
				isSupport = true;
				break;
			}
		}
		if (!isSupport) {
			$(this).val('');
			alert(notSupportMessage);
		}
	});
}

function limitUploadImageType(selector) {
	limitUploadFileType(selector, ['bmp', 'jpg', 'png', 'gif'], 'Files must be BMP, JPEG, GIF, or PNG');
}

$(function() {
	$(window).on('beforeunload', function() {
		$.blockUI({ theme: true });
		return undefined;
	});
	$(window).unload(function() {
		$.unblockUI(); // For safari previous page problem
	});
	$(document)
		.ajaxStart(function() { $.blockUI({ theme: true }); })
		.ajaxStop(function() { $.unblockUI(); })
		.ajaxError(function() { alertDialog('Warning', 'Network Error!'); });
});