function lgArea() {
	if(document.getElementById("loginArea").style.display == "none") {
		document.getElementById("loginArea").style.display = "";
		return true;
	} else {
		document.getElementById("loginArea").style.display = "none";
		return true;
	}
}

function lgValid(form) {
	if(form.user.value == "") {
		alert("Please input a valid username.");
		form.user.focus();
		return false;
	} else if(form.pass.value == "") {
		alert("Please input a valid password.");
		form.pass.focus();
		return false;
	} else {
		return true;
	}
}