1<script>
2function loaded()
3{
4   alert("While this alert is showing, two-fingered swipe back using a MacBook trackpad, Magic Trackpad, or Magic Mouse.  You should not be able to navigate back.  If you can, dismissing this dialog will likely result in a crash.");
5}
6</script>
7
8<body onload="loaded();">
9Follow the instructions in the alert that shows up on page load.
10</body>
11