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];
      }
    }
  }
}

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;
}

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;
    }
  }
}
var swImg; swImg=new Array;

HpbImgPreload('_HPB_ROLLOVER16', 'img_city_16.jpg', 'img_city_48.jpg');
HpbImgPreload('_HPB_ROLLOVER17', 'img_city_17.jpg', 'img_city_49.jpg');
HpbImgPreload('_HPB_ROLLOVER18', 'img_city_18.jpg', 'img_city_50.jpg');
HpbImgPreload('_HPB_ROLLOVER19', 'img_city_19.jpg', 'img_city_51.jpg');
HpbImgPreload('_HPB_ROLLOVER20', 'img_city_20.jpg', 'img_city_52.jpg');
HpbImgPreload('_HPB_ROLLOVER21', 'img_city_21.jpg', 'img_city_53.jpg');
HpbImgPreload('_HPB_ROLLOVER22', 'img_city_22.jpg', 'img_city_54.jpg');
HpbImgPreload('_HPB_ROLLOVER23', 'img_city_23.jpg', 'img_city_55.jpg');
HpbImgPreload('_HPB_ROLLOVER27', 'img_city_27.jpg', 'img_city_59.jpg');
HpbImgPreload('_HPB_ROLLOVER28', 'img_city_28.jpg', 'img_city_60.jpg');
HpbImgPreload('_HPB_ROLLOVER29', 'img_city_29.jpg', 'img_city_61.jpg');
HpbImgPreload('_HPB_ROLLOVER30', 'img_city_30.jpg', 'img_city_62.jpg');
HpbImgPreload('_HPB_ROLLOVER31', 'img_city_31.jpg', 'img_city_63.jpg');
HpbImgPreload('_HPB_ROLLOVER32', 'img_city_32.jpg', 'img_city_64.jpg');
HpbImgPreload('_HPB_ROLLOVER1', 'img_city_1.jpg', 'img_city_33.jpg');
HpbImgPreload('_HPB_ROLLOVER2', 'img_city_2.jpg', 'img_city_34.jpg');
HpbImgPreload('_HPB_ROLLOVER3', 'img_city_3.jpg', 'img_city_35.jpg');
HpbImgPreload('_HPB_ROLLOVER4', 'img_city_4.jpg', 'img_city_36.jpg');
HpbImgPreload('_HPB_ROLLOVER5', 'img_city_5.jpg', 'img_city_37.jpg');
HpbImgPreload('_HPB_ROLLOVER6', 'img_city_6.jpg', 'img_city_38.jpg');
HpbImgPreload('_HPB_ROLLOVER7', 'img_city_7.jpg', 'img_city_39.jpg');
HpbImgPreload('_HPB_ROLLOVER8', 'img_city_8.jpg', 'img_city_40.jpg');
HpbImgPreload('_HPB_ROLLOVER9', 'img_city_9.jpg', 'img_city_41.jpg');
HpbImgPreload('_HPB_ROLLOVER10', 'img_city_10.jpg', 'img_city_42.jpg');
HpbImgPreload('_HPB_ROLLOVER11', 'img_city_11.jpg', 'img_city_43.jpg');
HpbImgPreload('_HPB_ROLLOVER12', 'img_city_12.jpg', 'img_city_44.jpg');
HpbImgPreload('_HPB_ROLLOVER13', 'img_city_13.jpg', 'img_city_45.jpg');
HpbImgPreload('_HPB_ROLLOVER14', 'img_city_14.jpg', 'img_city_46.jpg');
HpbImgPreload('_HPB_ROLLOVER15', 'img_city_15.jpg', 'img_city_47.jpg');
HpbImgPreload('_HPB_ROLLOVER24', 'img_city_24.jpg', 'img_city_56.jpg');
HpbImgPreload('_HPB_ROLLOVER25', 'img_city_25.jpg', 'img_city_57.jpg');
HpbImgPreload('_HPB_ROLLOVER26', 'img_city_26.jpg', 'img_city_58.jpg');