[AS3]as3中mousewheel事件失效(wmode=transparent)因素

目前想到的解决方法，监听页面的鼠标中轮事件，然后回传给flash

function addEvent(elem, type, handler) {
type = type.replace(/^on/, '');
if (elem.attachEvent) {
elem.attachEvent('on' + type, handler);
} else if (elem.addEventListener) {
elem.addEventListener(type, handler, false);
}
}

//支持非IE、firefox浏览器
!(function() {
var swfEl = getEl('God_main');
var ua = navigator.userAgent.toLowerCase();

if (swfEl.addEventListener && !/(ie|opera)/.test(ua)) {
var eventType = /firefox/.test(ua) ? 'DOMMouseScroll' : 'mousewheel';

addEvent(swfEl, eventType, handleWheel);
}
})();

function handleWheel(event) {
var delta = /firefox/.test(navigator.userAgent.toLowerCase()) ? -event.detail : event.wheelDelta/40;

var swfEl = getEl('swfId');

swfEl.mouseWheel(delta);
}

AS中添加代码：

ExternalInterface.addCallback('mouseWheel', mouseWheelCallback);