function chgTab(tab,id) {
	switch (tab) {
	// 人気の動画カウント
	case 'popularmv':
		switch (id) {
		// 5分前
		case '5m':
			document.getElementById("popular-mv-list-5m").style.display = "block";
			document.getElementById("popular-mv-list-1h").style.display = "none";
			document.getElementById("popular-mv-list-12h").style.display = "none";
			document.getElementById("popular-mv-list-yesterday").style.display = "none";
			document.getElementById("popular-mv-list-tomorrow").style.display = "none";
			break;
		// 1時間前
		case '1h':
			document.getElementById("popular-mv-list-5m").style.display = "none";
			document.getElementById("popular-mv-list-1h").style.display = "block";
			document.getElementById("popular-mv-list-12h").style.display = "none";
			document.getElementById("popular-mv-list-yesterday").style.display = "none";
			document.getElementById("popular-mv-list-tomorrow").style.display = "none";
			break;
		// 12時間前
		case '12h':
			document.getElementById("popular-mv-list-5m").style.display = "none";
			document.getElementById("popular-mv-list-1h").style.display = "none";
			document.getElementById("popular-mv-list-12h").style.display = "block";
			document.getElementById("popular-mv-list-yesterday").style.display = "none";
			document.getElementById("popular-mv-list-tomorrow").style.display = "none";
			break;
		// 昨日
		case 'yesterday':
			document.getElementById("popular-mv-list-5m").style.display = "none";
			document.getElementById("popular-mv-list-1h").style.display = "none";
			document.getElementById("popular-mv-list-12h").style.display = "none";
			document.getElementById("popular-mv-list-yesterday").style.display = "block";
			document.getElementById("popular-mv-list-tomorrow").style.display = "none";
			break;
		// 明日?!
		case 'tomorrow':
			document.getElementById("popular-mv-list-5m").style.display = "none";
			document.getElementById("popular-mv-list-1h").style.display = "none";
			document.getElementById("popular-mv-list-12h").style.display = "none";
			document.getElementById("popular-mv-list-yesterday").style.display = "none";
			document.getElementById("popular-mv-list-tomorrow").style.display = "block";
			break;
		}
	
	// ランキング
	case 'ranking':
		switch (id) {
		// 有料動画
		case 'toll':
			document.getElementById("ranking-list-toll").style.display = "block";
			document.getElementById("ranking-list-free").style.display = "none";
			break;
		// 無料動画
		case 'free':
			document.getElementById("ranking-list-toll").style.display = "none";
			document.getElementById("ranking-list-free").style.display = "block";
			break;
		}
	
	default:
		break;
	}
}