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// My rewritten version
// 1) won't restrict viewport if JS is disabled
// 2) uses capture phase
// 3) assumes last viewport meta is the one to edit (incase for some odd reason there is more than one)
// 4) feature inference (no sniffs, behavior should be ignored on other enviros)
// 5) removes event handler after fired
!function(doc) {
var addEvent = 'addEventListener',
type = 'gesturestart',
qsa = 'querySelectorAll',
scales = [1, 1],
meta = qsa in doc ? doc[qsa]('meta[name=viewport]') : [];
function fix() {
meta.content = 'width=device-width,minimum-scale=' + scales[0] + ',maximum-scale=' + scales[1];
doc.removeEventListener(type, fix, !0);
}
if ((meta = meta[meta.length - 1]) && addEvent in doc) {
fix();
scales = [.25, 1.6];
doc[addEvent](type, fix, !0);
}
}(document);
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