// Checks if an email address is in a valid format
function validEmail(source, arguments)
{
	var regExp=/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*\.(([a-z]{2,3})|(aero|coop|info|museum|name))$/;
	var email = trim(arguments.Value);
	if (regExp.test(email))
	{
		arguments.IsValid = true;
	}
	else
	{
		arguments.IsValid = false;
	}
}