myID = "layer1"; // <DIV>のID名をセット
myTamaXsize = 560;   // 画像のサイズ(X)をセット
myTamaYsize = 200;   // 画像のサイズ(Y)をセット

myN6 = document.getElementById; // ブラウザ(N6)のチェック用
myIE = document.all;            // ブラウザ(IE)のチェック用
myN4 = document.layers;         // ブラウザ(N4)のチェック用
myObj = "";                     // ブラウザオブジェクト退避用

myX = 0;  // 玉の現在位置(X)
myXs = 0; // 玉の開始位置(X)
myXe = 0; // 玉の最終位置(X)

function myBrowserCheck(){
   if (myIE || myN6 || myN4){          // ブラウザがIEorN6orN4なら
      setInterval("myTamaMain()",100); // 0.1秒周期に動かす
   }
}

function myTamaMain(){
   if (myIE){
      myObj = document.all[myID].style;
      myXs = document.body.scrollLeft;
      myXe = myXs + document.body.clientWidth - myTamaXsize;
      mypx = "px";
   }else if (myN6){
      myObj=document.getElementById(myID).style;
      myXs = pageXOffset;
      myXe = myXs + innerWidth - myTamaXsize;
      mypx = "px";
   }else if (myN4){
      myObj = document[myID];
      myXs = pageXOffset;
      myXe = myXs + innerWidth - myTamaXsize;
      mypx = "";
   }


   // 玉を移動
	myX = (myXe - myXs) /2;
	if (myX < 160){
		myX = 160;
	}
   myObj.left = myX;
   myObj.top  = 350;
}


function win_r(btn_no){
	for (i=1; i <= 7; i++){
		set_text = "_off.gif";
		if(btn_no == i){
			set_text = "_on.gif";
		}
		change_src = "images/btn0"+ i + set_text;
		b_name = "btn" + i;
		document.images[b_name].src = change_src;
	}

	//NNの場合
	if (navigator.appName=="Netscape")
	{
		if(document.layers)
		{
			for (i=1; i <= 7; i++){
				layer_name = "layer"+ i;
				show_set = "hidden";
				if(btn_no == i){
					show_set = "visible";
				}
				document.layer_name.visibility=show_set;
			}
		}
		else
		{
			for (i=1; i <= 7; i++){
				layer_name = "layer"+ i;
				show_set = "hidden";
				if(btn_no == i){
					show_set = "visible";
				}
				document.getElementById(layer_name).style.visibility=show_set;
			}
			myID = "layer"+btn_no; // <DIV>のID名をセット
			
		}
	}
	//IEの場合
	else
	{

			layer1.style.visibility="hidden";
			layer2.style.visibility="hidden";
			layer3.style.visibility="hidden";
			layer4.style.visibility="hidden";
			layer5.style.visibility="hidden";
			layer6.style.visibility="hidden";
			layer7.style.visibility="hidden";
										
			if(btn_no == 1){
				layer1.style.visibility="visible";
			}
			if(btn_no == 2){
				layer2.style.visibility="visible";
			}
			if(btn_no == 3){
				layer3.style.visibility="visible";
			}
			if(btn_no == 4){
				layer4.style.visibility="visible";
			}
			if(btn_no == 5){
				layer5.style.visibility="visible";
			}
			if(btn_no == 6){
				layer6.style.visibility="visible";
			}
			if(btn_no == 7){
				layer7.style.visibility="visible";
			}
			myID = "layer"+btn_no; // <DIV>のID名をセット

	}
	


	myBrowserCheck();
	

}