function FitPage() {
  var win_size = window.getSize();
  var wrap_size = $('wrap').getSize();
  if (wrap_size.y < win_size.y) {
    if (Browser.Engine.trident) {
      $('wrap').style.height = win_size.y+'px';
    } else {
      $('wrap').style.minHeight = win_size.y+'px';
    }
  }
  $('footer').style.width = win_size.x < 999 ? '999px' : '100%';
}

window.addEvent("domready", FitPage);
window.addEvent("resize", FitPage);