if (document.images) {
  img02_f2 = new Image(180 ,20); img02_f2.src = "naviimg/img02_f2.gif";
  img02_f1 = new Image(180 ,20); img02_f1.src = "naviimg/img02.gif";
  nv01_f2 = new Image(123 ,28); nv01_f2.src = "naviimg/nv01_f2.gif";
  nv01_f1 = new Image(123 ,28); nv01_f1.src = "naviimg/nv01.gif";
  nv02_f2 = new Image(123 ,28); nv02_f2.src = "naviimg/nv02_f2.gif";
  nv02_f1 = new Image(123 ,28); nv02_f1.src = "naviimg/nv02.gif";
  nv03_f2 = new Image(124 ,28); nv03_f2.src = "naviimg/nv03_f2.gif";
  nv03_f1 = new Image(124 ,28); nv03_f1.src = "naviimg/nv03.gif";
  nv04_f2 = new Image(123 ,28); nv04_f2.src = "naviimg/nv04_f2.gif";
  nv04_f1 = new Image(123 ,28); nv04_f1.src = "naviimg/nv04.gif";
  nv05_f2 = new Image(123 ,28); nv05_f2.src = "naviimg/nv05_f2.gif";
  nv05_f1 = new Image(123 ,28); nv05_f1.src = "naviimg/nv05.gif";
  nv06_f2 = new Image(124 ,28); nv06_f2.src = "naviimg/nv06_f2.gif";
  nv06_f1 = new Image(124 ,28); nv06_f1.src = "naviimg/nv06.gif";
  }