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@Integralist
Created January 12, 2012 10:27
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Detect `onhashchange` support
var docmode = document.documentMode;
// Does the browser support window.onhashchange?
// Note that IE8 running in IE7 compatibility mode reports true for 'onhashchange' in window,
// even though the event isn't supported, so also test document.documentMode.
if ('onhashchange' in window && (docmode === undefined || docmode > 7 )) {
window.onhashchange = checkHash;
}
// IE7 doesn't support the hashchange event so we fall back to standard polling technique
else {
poll = window.setInterval(checkHash, 500);
// Clean-up objects as IE7 has hideous performance
window.onunload = function() {
window.clearInterval(poll);
}
}
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