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<!DOCTYPE html>
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<html>
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<head>
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    <title>MouseWheel Event Example</title>
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    <script type="text/javascript" src="/upload/files/201702//upload/files/201702/client.js"></script>
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    <script type="text/javascript" src="/upload/files/201702//upload/files/201702/EventUtil.js"></script>
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</head>
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<body>
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    <div id="myDiv">Try scrolling your mouse wheel.</div>
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    <script type="text/javascript">
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    (function(){
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        function handleMouseWheel(event){
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            event = EventUtil.getEvent(event);
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            var delta = EventUtil.getWheelDelta(event);
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            alert(delta);
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        }
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        EventUtil.addHandler(document, "mousewheel", handleMouseWheel);
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        EventUtil.addHandler(document, "DOMMouseScroll", handleMouseWheel);
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​
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    })();
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    </script>
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</body>
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</html>
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