var keyname = "hoge";

function showMenu(key){
	document.getElementById(key).style.visibility="visible";
	setKey(key);
}

function chengeColor(obj){
	key = getKey();
	obj.style.backgroundColor="#87ceeb";
	document.getElementById(key).style.visibility="hidden";
}

function chengeColor2(obj){
	obj.style.backgroundColor="#87ceeb";
}

function againColor(obj, key){
	obj.style.backgroundColor="#66bb88";
}

function MyMenu(tName){
	tMenu=document.getElementById(tName).style;

	if(tMenu.display=='none'){
		tMenu.display="block";
	}
	else {
		tMenu.display="none";
	}
}

function setKey(key){
	keyname = key;
}

function getKey(){
	return keyname;
}