function myChgPic(n){
	var WkString="";

	if(document.images){
		document.myBigImage1.src = "image/"+ n + "a.jpg";
   		document.myBigImage2.src = "image/"+ n + "b.jpg";
		
		switch (n){
		case 1:
			WkString = "電気モーター";
			break;
		case 2:
			WkString = "食品機械";
			break;
		case 3:
			WkString = "自動車エンジンルーム";
			break;
		case 4:
			WkString = "分電盤";
			break;
		case 5:
			WkString = "船舶エンジン";
			break;
		case 6:
			WkString = "印刷機械";
			break;
		case 7:
			WkString = "タービン";
			break;
		case 8:
			WkString = "製造ライン";
			break;
		case 9:
			WkString = "脱水装置";
			break;
		}
		document.getElementById("myText").innerText = WkString;
	}
}