function check_register(formobj) {
	birthdate = formobj.yy.value + "-" + formobj.mm.value + "-" + formobj.dd.value;
	if (isNull(formobj.username.value)) {
		alert ("Please fill in Login Name");
	} else if (!isPassword(formobj.password.value)) {
		alert ("Please fill in Password");
	} else if (isNull(formobj.name.value) || isNull(formobj.lastName.value)) {
		alert ("Please fill in First Name and Last Name");
	} else if (!isEmail(formobj.email.value)) {
		alert ("Please fill in a valid Email");
	} else if (!isIntlDate(birthdate)) {
		alert ("Please fill in Birthdate");
	} else if (isNull(formobj.address1.value)) {
		alert ("Please fill in Address1");
	} else {
		return true;
	}
	
	return false;	
}

function check_profile(formobj) {
	birthdate = formobj.yy.value + "-" + formobj.mm.value + "-" + formobj.dd.value;
	if (isNull(formobj.name.value) || isNull(formobj.lastName.value)) {
		alert ("Please fill in First Name and Last Name");
	} else if (!isPassword(formobj.password.value)) {
		alert ("Please fill in Password");
	} else if (!isEmail(formobj.email.value)) {
		alert ("Please fill in Email");
	} else if (!isIntlDate(birthdate)) {
		alert ("Please fill in Birthdate");
	} else if (isNull(formobj.address1.value)) {
		alert ("Please fill in Address1");
	} else {
		return true;
	}
	
	return false;	
}

function check_upload(formobj) {
	if (isNull(formobj.songname.value)) {
		alert ("Please fill in Song Name");
	} else if (isNull(formobj.songfile.value)) {
		alert ("Please fill in Song File");
	} else {
		return true;
	}
	
	return false;	
}

function check_contact(formobj) {
	if (isNull(formobj.name.value)) {
		alert ("Please fill in Name");
	} else if (!isEmail(formobj.email.value)) {
		alert ("Please fill in a valid email");
	} else if (isNull(formobj.tel.value)) {
		alert ("Please fill in Telephone Number.");
	} else if (isNull(formobj.subject.value)) {
		alert ("Please fill in Subject");
	} else if (isNull(formobj.message.value)) {
		alert ("Please fill in Message");
	} else {
		return true;
	}
	
	return false;	
}