function _ImgSwap(imgName, imgSrc)
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=false,isN6=false,isIE=false;
  if (document.all && appVer >= 4) isIE=true; else
    if (document.getElementById && appVer > 4) isN6=true; else
      if (document.layers && appVer >= 4) isNC=true;
  if (isNC||isN6||isIE)
  {
    if (document.images)
    {
      var img = document.images[imgName];
      if (!img) img = _ImgFind(document, imgName);
      if (img) img.src = imgSrc;
    }
  }
}

function _ImgFind(doc, imgName)
{
  for (var i=0; i < doc.layers.length; i++)
  {
    var img = doc.layers[i].document.images[imgName];
    if (!img) img = _ImgFind(doc.layers[i], imgName);
    if (img) return img;
  }
  return null;
}

	picture1 = new Image(); picture1.src="../img/01-01.gif";
	picture2 = new Image(); picture2.src="../img/01-02.gif";
	picture3 = new Image(); picture3.src="../img/02-01.gif";
	picture4 = new Image(); picture4.src="../img/02-02.gif";
	picture5 = new Image(); picture5.src="../img/03-01.gif";
	picture6 = new Image(); picture6.src="../img/03-02.gif";
	picture7 = new Image(); picture7.src="../img/04-01.gif";
	picture8 = new Image(); picture8.src="../img/04-02.gif";
	picture9 = new Image(); picture9.src="../img/05-01.gif";
	picture10 = new Image(); picture10.src="../img/05-02.gif";
	picture11 = new Image(); picture11.src="../img/bot_coupon01.gif";
	picture12 = new Image(); picture12.src="../img/bot_coupon02.gif";
	picture13 = new Image(); picture13.src="../img/bot_nice01.gif";
	picture14 = new Image(); picture14.src="../img/bot_nice02.gif";
	picture15 = new Image(); picture15.src="../img/bot_point01.gif";
	picture16 = new Image(); picture16.src="../img/bot_point02.gif";
	picture17 = new Image(); picture17.src="../img/bot_shosai01.gif";
	picture18 = new Image(); picture18.src="../img/bot_shosai02.gif";