function getMeetmeId() {
	var meetmeId = "";
	var key  = "meetmeId=";
	var meetmeIdCookie = document.cookie + ";";
	var start = meetmeIdCookie.indexOf(key);
	if (start != -1) {
		var end = meetmeIdCookie.indexOf(";", start);
		meetmeId = meetmeIdCookie.substring(start + key.length, end);
	}
	return meetmeId;
}

function loadLoginLink() {

	var meetmeId = getMeetmeId();
	var loginTag = '<a class="login" href="/mypage/login">ユーザーログイン</a>';
	var noLoginTag = '	  	<div id="mylogintop">\n'
	               + '        <a href="/mypage"><img class="gotomypage" src="/images/top/user_mypage_rn.jpg" alt="マイページ"></a><a href="/mypage/logout"><img class="logout" src="/images/top/user_logout_rn.jpg" alt="ログアウト"></a>\n'
	               + '        <p class="username">' + meetmeId + '</p>\n'
	               + '      </div>';

	var mypages = document.getElementById("mypages");
	if (meetmeId == '') {
		// 未ログイン
		mypages.innerHTML = loginTag;
	} else {
		// ログイン済み
		mypages.innerHTML = noLoginTag;
	}
}

loadLoginLink();