HOWTO: Native iPhone/iPad apps in JavaScript: "The touch handlers you can attach to are:
ontouchstart - a finger goes down.
ontouchmove - a finger moves.
ontouchend - a finger goes up.
The gesture handlers you can attach to are:
ongesturestart - a scale or a rotation starts.
ongesturechange - a scale or a rotation.
ongestureend - a scale or a rotation ends."
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