function QRImgPreload()
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=(document.layers && (appVer >= 4)); // Netscape Navigator 4.0 or later
  var isIE=(document.all    && (appVer >= 4)); // Internet Explorer  4.0 or later
  if (isNC || isIE)
  {
    if (document.images)
    {
      var imgName = QRImgPreload.arguments[0];
      var cnt;
      swImg[imgName] = new Array;
      for (cnt = 1; cnt < QRImgPreload.arguments.length; cnt++)
      {
        swImg[imgName][QRImgPreload.arguments[cnt]] = new Image();
        swImg[imgName][QRImgPreload.arguments[cnt]].src = QRImgPreload.arguments[cnt];
      }
    }
  }
}
function QRImgFind(doc, imgName)
{
  for (var i=0; i < doc.layers.length; i++)
  {
    var img = doc.layers[i].document.images[imgName];
    if (!img) img = QRImgFind(doc.layers[i], imgName);
    if (img) return img;
  }
  return null;
}
function QRImgSwap(imgName, imgSrc)
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=(document.layers && (appVer >= 4)); // Netscape Navigator 4.0 or later
  var isIE=(document.all    && (appVer >= 4)); // Internet Explorer  4.0 or later
  if (isNC || isIE)
  {
    if (document.images)
    {
      var img = document.images[imgName];
      if (!img) img = QRImgFind(document, imgName);
      if (img) img.src = imgSrc;
    }
  }
}
var swImg; swImg=new Array;
QRImgPreload('_QR_ROLLOVER1', 'gr_hf/basic_30.gif', 'gr_hf/basic2_30.gif');
QRImgPreload('_QR_ROLLOVER2', 'gr_hf/basic_34.gif', 'gr_hf/basic2_34.gif');
QRImgPreload('_QR_ROLLOVER3', 'gr_hf/basic_36.gif', 'gr_hf/basic2_36.gif');
QRImgPreload('_QR_ROLLOVER4', 'gr_hf/basic_38.gif', 'gr_hf/basic2_38.gif');
QRImgPreload('_QR_ROLLOVER5', 'gr_hf/basic_40.gif', 'gr_hf/basic2_40.gif');
QRImgPreload('_QR_ROLLOVER6', 'gr_hf/basic_44.gif', 'gr_hf/basic2_44.gif');
QRImgPreload('_QR_ROLLOVER7', 'gr_hf/basic_42.gif', 'gr_hf/basic2_42.gif');
QRImgPreload('_QR_ROLLOVER8', 'gr_hf/basic_48.gif', 'gr_hf/basic_49.gif');