if (U_cnt <= 4) {
			this["U_mc" + U_cnt] = new U_mc();
			this["U_mc" + U_cnt].x = 50 + U_cnt * 100;
			this["U_mc" + U_cnt].y = 200;
			this.addChild(this["U_mc" + U_cnt]);
			U_cnt++;
		}
	}
}

//カウンタを用意
var R_cnt:int = 0;
var L_cnt:int = 0;
var U_cnt:int = 0;
var D_cnt:int = 0; //←この例では不要
var S_cnt:int = 0; //←この例では不要

//最大個数の設定(仮に5つまで)
var Max_cnt:int = 5;

//キーを押したときに関数「A1」を実行
stage.addEventListener(KeyboardEvent.KEY_DOWN,A1);

//関数「A1」の定義
function A1(event:KeyboardEvent):void {
	if (event.keyCode == Keyboard.RIGHT) {
		if (R_cnt < Max_cnt) {
			this["R_mc" + R_cnt] = new R_mc();
			this["R_mc" + R_cnt].x = 50 + R_cnt * 300;
			this["R_mc" + R_cnt].y = 200;
			this.addChild(this["R_mc" + R_cnt]);
			R_cnt++;
		} else {
			//並べたものを消す
			for (var i:int = 0; i < Max_cnt; i++) {
				this.removeChild(this["R_mc" + i]);
				this["R_mc" + i] = null;
			}
			//カウンタを0に戻す
			R_cnt = 0;
		}
	} else if (event.keyCode == Keyboard.LEFT) {
		if (L_cnt < Max_cnt) {
			this["L_mc" + L_cnt] = new L_mc();
			this["L_mc" + L_cnt].x = 50 + L_cnt * 300;
			this["L_mc" + L_cnt].y = 500;
			this.addChild(this["L_mc" + L_cnt]);
			L_cnt++;
		} else {
			//並べたものを消す
			for (i = 0; i < Max_cnt; i++) {
				this.removeChild(this["L_mc" + i]);
				this["L_mc" + i] = null;
			}
			//カウンタを0に戻す
			L_cnt = 0;
		}
	} else if (event.keyCode == Keyboard.UP) {
		if (U_cnt < Max_cnt) {
			this["U_mc" + U_cnt] = new U_mc();
			this["U_mc" + U_cnt].x = 50 + U_cnt * 300;
			this["U_mc" + U_cnt].y = 800;
			this.addChild(this["U_mc" + U_cnt]);
			U_cnt++;
		} else {
			//並べたものを消す
			for (i = 0; i < Max_cnt; i++) {
				this.removeChild(this["U_mc" + i]);
				this["U_mc" + i] = null;
			}
			//カウンタを0に戻す
			U_cnt = 0;
		}
	}
}

//カウンタを用意
var R_cnt:int = 0;
var L_cnt:int = 0;
var U_cnt:int = 0;
var D_cnt:int = 0;//←この例では不要
var S_cnt:int = 0;//←この例では不要

//最大個数の設定(仮に5つまで)
var Max_cnt:int = 5;

//キーを押したときに関数「A1」を実行
stage.addEventListener(KeyboardEvent.KEY_DOWN,A1);

//関数「A1」の定義
function A1(event:KeyboardEvent):void {
	if (event.keyCode == Keyboard.RIGHT) {
		//関数「makeRectangle」を実行(MC名，カウンタ名，y座標)
		makeRectangle("R_mc","R_cnt",200);
	} else if (event.keyCode == Keyboard.LEFT) {
		makeRectangle("L_mc","L_cnt",500);
	} else if (event.keyCode == Keyboard.UP) {
		makeRectangle("U_mc","U_cnt",800);
	}
}

//関数「makeRectangle」の定義
function makeRectangle(name_str:String,cnt_str:String,mc_y:Number):void {
	if (this[cnt_str] < Max_cnt) {
		var tmpClass:Class = Class(getDefinitionByName(name_str));
		this[name_str + this[cnt_str]] = new tmpClass();
		this[name_str + this[cnt_str]].x = 50 + this[cnt_str] * 300;
		this[name_str + this[cnt_str]].y = mc_y;
		this.addChild(this[name_str + this[cnt_str]]);
		this[cnt_str]++;
	} else {
		//並べたものを消す
		for (var i:int = 0; i < Max_cnt; i++) {
			this.removeChild(this[name_str + i]);
			this[name_str + i] = null;
		}
		//カウンタを0に戻す
		this[cnt_str] = 0;
	}
}