if (document.images) {
  top01_f2 = new Image(65 ,20); top01_f2.src = "naviimg/top01_f2.gif";
  top01_f1 = new Image(65 ,20); top01_f1.src = "naviimg/top01.gif";
  top02_f2 = new Image(90 ,20); top02_f2.src = "naviimg/top02_f2.gif";
  top02_f1 = new Image(90 ,20); top02_f1.src = "naviimg/top02.gif";
  top03_f2 = new Image(126 ,20); top03_f2.src = "naviimg/top03_f2.gif";
  top03_f1 = new Image(126 ,20); top03_f1.src = "naviimg/top03.gif";
  navi01_f2 = new Image(110 ,20); navi01_f2.src = "naviimg/navi01_f2.gif";
  navi01_f1 = new Image(110 ,20); navi01_f1.src = "naviimg/navi01.gif";
  navi02_f2 = new Image(109 ,20); navi02_f2.src = "naviimg/navi02_f2.gif";
  navi02_f1 = new Image(109 ,20); navi02_f1.src = "naviimg/navi02.gif";
  navi03_f2 = new Image(109 ,20); navi03_f2.src = "naviimg/navi03_f2.gif";
  navi03_f1 = new Image(109 ,20); navi03_f1.src = "naviimg/navi03.gif";
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  navi04_f1 = new Image(109 ,20); navi04_f1.src = "naviimg/navi04.gif";
  navi05_f2 = new Image(109 ,20); navi05_f2.src = "naviimg/navi05_f2.gif";
  navi05_f1 = new Image(109 ,20); navi05_f1.src = "naviimg/navi05.gif";
  navi06_f2 = new Image(109 ,20); navi06_f2.src = "naviimg/navi06_f2.gif";
  navi06_f1 = new Image(109 ,20); navi06_f1.src = "naviimg/navi06.gif";
  navi07_f2 = new Image(109 ,20); navi07_f2.src = "naviimg/navi07_f2.gif";
  navi07_f1 = new Image(109 ,20); navi07_f1.src = "naviimg/navi07.gif";
}