// First, lets avoid those IE 3.x & NN 2.x. The damn from the ancient times...
var browser_ok = (document.all || document.layers) ? 1 : 0, on = 1, off = 0, imgs, x, i;
if (browser_ok) {
  for (imgs = new Array(8), i = 0; i < 8 ; i++) {  // NOTE: set number of rollovers * 2.
    imgs[i] = new Image();
    imgs[i].src = "pic/m" + parseInt((i >> 1) + 1) + ((i & 1) ? "_1.gif" : ".gif");
  }
}
function swap(img, turn) {
  if (! browser_ok) return;
  for (eval("x = document."+img+".src"), i = 0; x != imgs[i].src; i++);
  eval("document."+img+".src = \"" + ((i & 1) ? imgs[i - 1].src : imgs[i + 1].src) + "\"");
}