function about() {
	if($('membermenu').visible()){
		new Effect.Fade("membermenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("membermenu", {
			duration: 0.2
		});
	}else if($('worksmenu').visible()){
		new Effect.Fade("worksmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("worksmenu", {
			duration: 0.2
		});
	}else if($('soundmenu').visible()){
		new Effect.Fade("soundmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("soundmenu", {
			duration: 0.2
		});
	}

	if(!$('aboutmenu').visible()){
		new Effect.Appear("aboutmenu", {   
			from:     0.0,
			to:       1.0, 
			duration: 0.3
		});
		new Effect.BlindDown("aboutmenu", {
			duration: 0.2
		});
	}else{
		new Effect.Fade("aboutmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("aboutmenu", {
			duration: 0.3
		});
	}
}
function member() {
	if($('aboutmenu').visible()){
		new Effect.Fade("aboutmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("aboutmenu", {
			duration: 0.2
		});
	}else if($('worksmenu').visible()){
		new Effect.Fade("worksmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("worksmenu", {
			duration: 0.2
		});
	}else if($('soundmenu').visible()){
		new Effect.Fade("soundmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("soundmenu", {
			duration: 0.2
		});
	}

	if(!$('membermenu').visible()){
		new Effect.Appear("membermenu", {   
			from:     0.0,
			to:       1.0, 
			duration: 0.3
		});
		new Effect.BlindDown("membermenu", {
			duration: 0.2
		});
	}else{
		new Effect.Fade("membermenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("membermenu", {
			duration: 0.3
		});
	}
}
function works() {
	if($('aboutmenu').visible()){
		new Effect.Fade("aboutmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("aboutmenu", {
			duration: 0.2
		});
	}else if($('membermenu').visible()){
		new Effect.Fade("membermenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("membermenu", {
			duration: 0.2
		});
	}else if($('soundmenu').visible()){
		new Effect.Fade("soundmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("soundmenu", {
			duration: 0.2
		});
	}

	if(!$('worksmenu').visible()){
		new Effect.Appear("worksmenu", {   
			from:     0.0,
			to:       1.0, 
			duration: 0.3
		});
		new Effect.BlindDown("worksmenu", {
			duration: 0.2
		});
	}else{
		new Effect.Fade("worksmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("worksmenu", {
			duration: 0.3
		});
	}
}
function sound() {
	if($('aboutmenu').visible()){
		new Effect.Fade("aboutmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("aboutmenu", {
			duration: 0.2
		});
	}else if($('membermenu').visible()){
		new Effect.Fade("membermenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("membermenu", {
			duration: 0.2
		});
	}else if($('worksmenu').visible()){
		new Effect.Fade("worksmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("worksmenu", {
			duration: 0.2
		});
	}

	if(!$('soundmenu').visible()){
		new Effect.Appear("soundmenu", {   
			from:     0.0,
			to:       1.0, 
			duration: 0.3
		});
		new Effect.BlindDown("soundmenu", {
			duration: 0.2
		});
	}else{
		new Effect.Fade("soundmenu", {
			from:     1.0,
			to:       0.0, 
			duration: 0.3
		});
		new Effect.BlindUp("soundmenu", {
			duration: 0.3
		});
	}
}
function producer() {
	if(!$('producershow').visible()){
		new Effect.BlindDown("producershow", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("producershow", {
			duration:0.3
		});
	}
}
function mastaring() {
	if(!$('mastaringshow').visible()){
		new Effect.BlindDown("mastaringshow", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("mastaringshow", {
			duration:0.3
		});
	}
}
function lyricist() {
	if(!$('lyricistshow').visible()){
		new Effect.BlindDown("lyricistshow", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("lyricistshow", {
			duration:0.3
		});
	}
}
function vocal() {
	if(!$('vocalshow').visible()){
		new Effect.BlindDown("vocalshow", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("vocalshow", {
			duration:0.3
		});
	}
}
function web() {
	if(!$('webshow').visible()){
		new Effect.BlindDown("webshow", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("webshow", {
			duration:0.3
		});
	}
}
function listenmenu() {
	if(!$('player').visible()){
		new Effect.BlindDown("player", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("player", {
			duration:0.3
		});
	}
}

function bbs1() {
	if(!$('res1').visible()){
		new Effect.BlindDown("res1", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res1", {
			duration:0.3
		});
	}
}

function bbs2() {
	if(!$('res2').visible()){
		new Effect.BlindDown("res2", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res2", {
			duration:0.3
		});
	}
}

function bbs3() {
	if(!$('res3').visible()){
		new Effect.BlindDown("res3", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res3", {
			duration:0.3
		});
	}
}

function bbs4() {
	if(!$('res4').visible()){
		new Effect.BlindDown("res4", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res4", {
			duration:0.3
		});
	}
}

function bbs5() {
	if(!$('res5').visible()){
		new Effect.BlindDown("res5", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res5", {
			duration:0.3
		});
	}
}

function bbs6() {
	if(!$('res6').visible()){
		new Effect.BlindDown("res6", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res6", {
			duration:0.3
		});
	}
}

function bbs7() {
	if(!$('res7').visible()){
		new Effect.BlindDown("res7", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res7", {
			duration:0.3
		});
	}
}

function bbs8() {
	if(!$('res8').visible()){
		new Effect.BlindDown("res8", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res8", {
			duration:0.3
		});
	}
}

function bbs9() {
	if(!$('res9').visible()){
		new Effect.BlindDown("res9", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res9", {
			duration:0.3
		});
	}
}

function bbs10() {
	if(!$('res10').visible()){
		new Effect.BlindDown("res10", {
			duration:0.3
		});
	}else{
		new Effect.BlindUp("res10", {
			duration:0.3
		});
	}
}

function conf() {
	return confirm('こちらはR指定を含むサイトとなっています。\nそれでもよろしいですか？');
}