var Login = function(){
	this.submit = function(){
		var isValid = validate();
		if(!isValid){
			return;
		} else {
			document.getElementById("loginForm").submit();
		}
	}
	function validate(){
		var email =  document.getElementById("email");
		var password =  document.getElementById("password");
		if(email.value==null||email.value==""){
			alert(constants.MESSAGE_LOGIN_NOT_INPUT_EMAIL);
			return false;
		}
		if(password.value==null||password.value==""){
			alert(constants.MESSAGE_LOGIN_NOT_INPUT_PASSWORD);
			return false;
		}
	return true;
	}
}
var login = new Login();