function show(w) { document.getElementById(w).style.visibility = 'visible'; }
function hide(w) { document.getElementById(w).style.visibility = 'hidden'; }

/* banners */
var old = 0;
var current = 0;
var current2 = 0;
var old2 = 0;

function init() {

  if (!document.images) return
  while (current == old) { current = Math.floor(Math.random()*banners.length); }
  old = current;
  document.getElementById('b1_img').src = banners[current];
  document.getElementById('b1_link').href = linx[current];

  while (current2 == old2) { current2 = Math.floor(Math.random()*banners2.length); }
  old2 = current2;
  document.getElementById('b2_img').src = banners2[current2];
  document.getElementById('b2_link').href = linx2[current2];

  setTimeout('init()', 2000);

}