function Form()
	{
	}



	Form.prototype.isMail = function(vs_mail)
	{
		var re = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,})+$/;
		return (re.test(vs_mail));
	}



	Form.prototype.isDate = function(vs_date)
	{
		var re = /^(3[01]|0[1-9]|[12]\d)\/(0[1-9]|1[012])\/\d{4}/;
		return (re.test(vs_date))
	}



	Form.prototype.isNumber = function(vs_value)
	{
		var re = /^[0-9]+$/;
		return (re.test(vs_value));
	}



	var Form = new Form();