function checkLogin(){
	var email = document.getElementById("email").value;
	var pwd = document.getElementById("pwd").value;
	var captcha = document.getElementById("checkcaptcha").value;
	var patrn = /^[0-9]{4}$/;
	if(email == "" || pwd == "" || !patrn.exec(captcha)){
		return false;
	}
}

function checkMail(){
	var email = document.getElementById("email").value;
	var patrn = /^([\w{1,}])([\w-]*(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	if(!patrn.exec(email)){
		document.getElementById("e1").innerHTML = "Not a valid Email";
		return false;	
	}else{
		document.getElementById("e1").innerHTML = "";
		return true;
	}
}

function checkPwd(){
	var pwd = document.getElementById("pwd").value;
	var patrn = /^[0-9a-zA-Z-_]{6,32}$/;
	if(!patrn.exec(pwd)){
		document.getElementById("e2").innerHTML = "Please enter 6 - 18 characters(a-z,A-Z,0-9 only)";
		return false;
	}else{
		document.getElementById("e2").innerHTML = "";
		return true;
	}
}

function loginSubmit(){
	if(checkLogin() == false || checkMail() == false || checkPwd() == false){
		return false;
	}else{
		document.getElementById('pwd').value = hex_md5(document.getElementById('pwd').value);
	}
}