var imgs = new Array();

dom = (document.getElementById)? true : false;
nn4 = (document.layers)? true : false;
ie4 = (!dom && document.all)? true : false;

function showPhoto(index) {
   if (dom) {
      document.getElementById('img').src = imgs[index].src;
   }
   else if (ie4) {
      document.all["img"].src = imgs[index].src;
   }
   else if (nn4) {
      document.layers["img"].src = imgs[index].src;
   }
   return false;
}

function clickPhoto(index) {
   return window.parent.showPhoto(index);
}

window.parent.imgs[0] = new Image();
window.parent.imgs[0].src = "images/gallery/01.jpg";
window.parent.imgs[1] = new Image();
window.parent.imgs[1].src = "images/gallery/02.jpg";
window.parent.imgs[2] = new Image();
window.parent.imgs[2].src = "images/gallery/03.jpg";
window.parent.imgs[3] = new Image();
window.parent.imgs[3].src = "images/gallery/04.jpg";
window.parent.imgs[4] = new Image();
window.parent.imgs[4].src = "images/gallery/05.jpg";
window.parent.imgs[5] = new Image();
window.parent.imgs[5].src = "images/gallery/06.jpg";
window.parent.imgs[6] = new Image();
window.parent.imgs[6].src = "images/gallery/07.jpg";
window.parent.imgs[7] = new Image();
window.parent.imgs[7].src = "images/gallery/08.jpg";
window.parent.imgs[8] = new Image();
window.parent.imgs[8].src = "images/gallery/09.jpg";
window.parent.imgs[9] = new Image();
window.parent.imgs[9].src = "images/gallery/10.jpg";
window.parent.imgs[10] = new Image();
window.parent.imgs[10].src = "images/gallery/11.jpg";
window.parent.imgs[11] = new Image();
window.parent.imgs[11].src = "images/gallery/12.jpg";