if (document.images) {
	var Img=new Array();
	Img[1]  =new Image(),Img[1].src ="image/btn11.gif";
	Img[2]  =new Image(),Img[2].src ="image/btn01.gif";
	Img[3]  =new Image(),Img[3].src ="image/btn12.gif";
	Img[4]  =new Image(),Img[4].src ="image/btn02.gif";
	Img[5]  =new Image(),Img[5].src ="image/btn13.gif";
	Img[6]  =new Image(),Img[6].src ="image/btn03.gif";
	Img[7]  =new Image(),Img[7].src ="image/btn14.gif";
	Img[8]  =new Image(),Img[8].src ="image/btn04.gif";
	Img[9]  =new Image(),Img[9].src ="image/btn15.gif";
	Img[10] =new Image(),Img[10].src="image/btn05.gif";
	Img[11] =new Image(),Img[11].src="image/btn16.gif";
	Img[12] =new Image(),Img[12].src="image/btn06.gif";
	Img[13] =new Image(),Img[13].src="image/btn17.gif";
	Img[14] =new Image(),Img[14].src="image/btn07.gif";
	Img[15] =new Image(),Img[15].src="image/btn18.gif";
	Img[16] =new Image(),Img[16].src="image/btn08.gif";
	Img[17] =new Image(),Img[17].src="image/btn19.gif";
	Img[18] =new Image(),Img[18].src="image/btn09.gif";
	Img[19] =new Image(),Img[19].src="image/btn20.gif";
	Img[20] =new Image(),Img[20].src="image/btn00.gif";
}

/* ------------------------------------------------------------
function R()
【ボタンのマウスアクションを制御】
	name : 変更させる画像（<img>タグ）のname要素名
	num  : 上記配列から、変更後の画像が記述された配列番号を指定
------------------------------------------------------------*/
function R(name,num) {
	if (document.images) document.images[name].src=Img[num].src;
}