function member_login() {
	var form = document.loginForm;
	
	if(form.loginEmail.value == '' || form.loginEmail.value.length == 0) {
		alert("Please input your login email");
		return;
	}
	if (echeck(form.loginEmail.value)==false) {
		alert("Please enter a valid email address");
		return;
	}	
	
	if(form.loginPsw.value == '' || form.loginPsw.value.length == 0) {
		alert("Please input your password");
		return;
	}
	

	form.submit();
}

function member_logout() {
	document.member_logout_form.submit();
}

function member_registration(form) {
	if(form.firstName.value == '' || form.firstName.value.length == 0) {
		alert("Please input your first name");
		return;
	}
	if(form.lastName.value == '' || form.lastName.value.length == 0) {
		alert("Please input your last name");
		return;
	}
	if(form.loginEmail.value == '' || form.loginEmail.value.length == 0) {
		alert("Please input your login email");
		return;
	}
	if (echeck(form.loginEmail.value)==false) {
		alert("Please enter a valid email address");
		return;
	}	
	var gender = getButtonValue(form.gender);
	if(gender == null) {
		alert("Please select your gender");
		return;
	}
	if(form.loginPsw.value == '' || form.loginPsw.value.length == 0) {
		alert("Please input your password");
		return;
	}
	if(form.loginPsw.value.length < 6) {
		alert("Please fill in 6 characters or more in password");
		return;
	}
	if(form.ageGroup.value == '' || form.ageGroup.value.length == 0) {
		alert("Please select your age group");
		return;
	}
	if(form.confirmLoginPsw.value == '' || form.confirmLoginPsw.value.length == 0) {
		alert("Please input the confirm password");
		return;
	}
	if(form.loginPsw.value != form.confirmLoginPsw.value) {
		alert("Confirm password must be same as password");
		return;
	}
	if(form.country.value == '' || form.country.value.length == 0) {
		alert("Please input your country of origin");
		return;
	}
	if(form.phone.value == '' || form.phone.value.length == 0) {
		alert("Please input your mobile number");
		return;
	}

	form.submit();
}

function getButtonValue(btn) {
	var x = (-1);
	for(var i = 0; i < btn.length; i ++) {
		if(btn[i].checked) {
			x = i;
			break;
		}
	}
	if(x >= 0) {
		return btn[x].value;
	} else {
		return null;
	}
}