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cloudhead/gist:463624

Created July 4, 2010 17:59
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gistfile1.js
window.onload = function () {
if (! document.querySelectorAll) { // Quick & Dirty way to tell the good browsers from the bad ones.
alert("Please upgrade your browser to view this site.");
}
};
@andreyvit
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A slightly better ‘action’ part:

window.onload = function () {
  if (! document.querySelectorAll) { // Quick & Dirty way to tell the good browsers from the bad ones.
    window.location.href = "/screenshot.png"; // a screenshot from Safari/Chrome + a message to upgrade the browser
  }
};

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