Firefox OnBeforeUnload Fun!

So Kevin correctly pointed out that you can do the same onbeforeunload behavior in Firefox as you can in Internet Explorer. It does require a little bit of a tweak to use the DOM event model, though:

window.onbeforeunload = function (oEvent) {
    oEvent.returnValue = "blah";

See, even JavaScript authors can learn something new every once in a while!

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