function omake(menu_id){
	var div=document.getElementById(menu_id);
	var case1=document.getElementById("secret");
	var case2=document.getElementById("secret2");
	var case3=document.getElementById("secret3");
	var case4=document.getElementById("secret4");
	if(div == case1){
		case1.style.display="none";
		case2.style.display="block";
		case3.style.display="none";
		case4.style.display="block";
	}
	else if(div == case2){
		case2.style.display="none";
		case3.style.display="block";
		case4.style.display="none";
	}
	else if(div == case3){
		case2.style.display="block";
		case3.style.display="none";
		case4.style.display="none";
	}
	else if(div == case4){
		var goal=document.getElementById("goal");
		case2.style.display="none";
		case4.style.display="none";
		goal.style.display="block";
		window.alert("ミッションコンプリート！！！\n7個そろったので，あなたの願いが何でも1つ叶うかも？！");
	}
}