Game_System.prototype.checkWeapon = function(){
	var charLen = $gameActors._data.length - 1;
	for (var i = 0; i < charLen; i++){
		var weapon = $gameActors.actor(i + 1)._equips[0]._itemId;
		if (weapon != 0){
			return false;
		}
	}
	return true;
}