TsukouImgPreload('_Tsukou_ROLLOVER1', './navigation/bar01.gif', './navigation/bar01_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER2', './navigation/bar02.gif', './navigation/bar02_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER3', './navigation/bar03.gif', './navigation/bar03_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER4', './navigation/bar04.gif', './navigation/bar04_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER5', './navigation/bar05.gif', './navigation/bar05_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER6', './navigation/bar06.gif', './navigation/bar06_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER7', './navigation/bar07.gif', './navigation/bar07_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER8', './navigation/bar08.gif', './navigation/bar08_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER9', './navigation/bar09.gif', './navigation/bar09_change.gif');
TsukouImgPreload('_Tsukou_ROLLOVER20', './navigation/bar20.gif', './navigation/bar20_change.gif');


function TsukouImgPreload()
{
  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 = TsukouImgPreload.arguments[0];
      var cnt;
      swImg[imgName] = new Array;
      for (cnt = 1; cnt < TsukouImgPreload.arguments.length; cnt++)
      {
        swImg[imgName][TsukouImgPreload.arguments[cnt]] = new Image();
        swImg[imgName][TsukouImgPreload.arguments[cnt]].src = TsukouImgPreload.arguments[cnt];
      }
    }
  }
}
//
function TsukouImgSwap(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)
    {
      document.images[imgName].src = imgSrc;
    }
  }
}
var swImg; swImg=new Array;