function HpbImgPreload()
{
  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 imgName = HpbImgPreload.arguments[0];
      var cnt;
      swImg[imgName] = new Array;
      for (cnt = 1; cnt < HpbImgPreload.arguments.length; cnt++)
      {
        swImg[imgName][HpbImgPreload.arguments[cnt]] = new Image();
        swImg[imgName][HpbImgPreload.arguments[cnt]].src = HpbImgPreload.arguments[cnt];
      }
    }
  }
}
// HpbImgFind:
//
function HpbImgFind(doc, imgName)
{
  for (var i=0; i < doc.layers.length; i++)
  {
    var img = doc.layers[i].document.images[imgName];
    if (!img) img = HpbImgFind(doc.layers[i], imgName);
    if (img) return img;
  }
  return null;
}
// HpbImgSwap:
//
function HpbImgSwap(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 = HpbImgFind(document, imgName);
      if (img) img.src = imgSrc;
    }
  }
}

// 画像を指定されたサイズに変更する
function changeImage(w,h) {
  document.img.width = w;
  document.img.height = h;
}


var swImg; swImg=new Array;
HpbImgPreload('_HPB_ROLLOVER3', 'botan-live-off.jpg', 'botan-live-on.jpg');
HpbImgPreload('_HPB_ROLLOVER1', 'botan-top-off.jpg', 'botan-top-on.jpg');
HpbImgPreload('_HPB_ROLLOVER2', 'botan-concept-off.jpg', 'botan-concept-on.jpg');
HpbImgPreload('_HPB_ROLLOVER5', 'botan-goods-off.jpg', 'botan-goods-on.jpg');
HpbImgPreload('_HPB_ROLLOVER6', 'botan-shopping-off.jpg', 'botan-shopping-on.jpg');
HpbImgPreload('_HPB_ROLLOVER8', 'botan-qa-off.jpg', 'botan-qa-on.jpg');
HpbImgPreload('_HPB_ROLLOVER11', 'botan-link-off.jpg', 'botan-link-on.jpg');
HpbImgPreload('_HPB_ROLLOVER10', 'botan-company-off.jpg', 'botan-company-on.jpg');
HpbImgPreload('_HPB_ROLLOVER4', 'botan-home-off.jpg', 'botan-home-on.jpg');
HpbImgPreload('_HPB_ROLLOVER7', 'botan-inquiry-off.jpg', 'botan-inquiry-on.jpg');
HpbImgPreload('_HPB_ROLLOVER9', 'botan-aqua_v-off.jpg', 'botan-aqua_v-on.jpg');

// 今年度の表示
var today= new Date();
yyyy=today.getFullYear(); // 年を取得…変数yyyyに格納