var ExitJs = {
  redir: true,
  unload: false,
  url: null,
  warning: 'We Apologize if that was not the offer you were looking for. Feel Free to Take Advantage of these other Special Offers in your Area.'
}

if (navigator.userAgent.indexOf('WebKit') == -1) {
  window.onbeforeunload = function(e) {
    if(!ExitJs.redir && ExitJs.url) {
      location.replace(ExitJs.url);
      return ExitJs.warning;
    }
  }
}

Event.observe(window, 'load', function() { ExitJs.redir = false });