function initLogin(){
	var LoginId = document.getElementById("login");
	var LoginZone = document.getElementById("loginCover");
	LoginId.className="";
	LoginZone.onclick = changeLoginState;
	return true;
};

function changeLoginState(){
	var LoginId = document.getElementById("login");
	var pat = new RegExp("(^| )" + "down" + "( |$)");
	
	if(LoginId.className.match(pat)){
		LoginId.className="";
	}else{
		LoginId.className="down";
	}	
	return false;
};