function loadImages()
{ this[1] = new Image();
  this[1].src = "images/Homde.gif";
  this[2] = new Image();
  this[2].src = "images/Homde1.gif";
  this[3] = new Image();
  this[3].src = "images/Biode.gif";
  this[4] = new Image();
  this[4].src = "images/Biode1.gif";
  this[5] = new Image();
  this[5].src = "images/Resde.gif";
  this[6] = new Image();
  this[6].src = "images/Resde1.gif";
  this[7] = new Image();
  this[7].src = "images/Rep.gif";
  this[8] = new Image();
  this[8].src = "images/Rep1.gif";
  this[9] = new Image();
  this[9].src = "images/Revde.gif";
  this[10] = new Image();
  this[10].src = "images/Revde1.gif";

}
if (document.images)
{ loadImages();
}

function switchNav(i, flag) {
//  alert(i + '---' + flag); 
  if (document.images) {
    if (flag == 0) { document.images[i].src = "images/Homde.gif"; }
    if (flag == 1) { document.images[i].src = "images/Homde1.gif"; }
    if (flag == 2) { document.images[i].src = "images/Biode.gif"; }
    if (flag == 3) { document.images[i].src = "images/Biode1.gif"; }
    if (flag == 4) { document.images[i].src = "images/Resde.gif"; }
    if (flag == 5) { document.images[i].src = "images/Resde1.gif"; }
    if (flag == 6) { document.images[i].src = "images/Rep.gif"; }
    if (flag == 7) { document.images[i].src = "images/Rep1.gif"; }
    if (flag == 8) { document.images[i].src = "images/Revde.gif"; }
    if (flag == 9) { document.images[i].src = "images/Revde1.gif"; }
  }
}