// http://www.switchonthecode.com/tutorials/javascript-tutorial-the-scroll-wheel

function handleWheel(e) {
	var app = document.getElementById(flashMovieID);
	e = e ? e : window.e;
	var wheelData = e.detail ? e.detail * -1 : e.wheelDelta / 40;

	if (app) {
		var o = {
			x : e.screenX,
			y : e.screenY,
			delta : wheelData,
			ctrlKey : e.ctrlKey,
			altKey : e.altKey,
			shiftKey : e.shiftKey
		};
		app.handleWheel(o);
		cancelEvent(e);
	}
}

function hookEvent(element, eventName, callback) {
	if (typeof (element) == "string")
		element = document.getElementById(element);
	if (element == null)
		return;
	if (element.addEventListener) {
		if (eventName == 'mousewheel')
			element.addEventListener('DOMMouseScroll', callback, false);
		element.addEventListener(eventName, callback, false);
	} else if (element.attachEvent)
		element.attachEvent("on" + eventName, callback);
}

function unhookEvent(element, eventName, callback) {
	if (typeof (element) == "string")
		element = document.getElementById(element);
	if (element == null)
		return;
	if (element.removeEventListener) {
		if (eventName == 'mousewheel')
			element.removeEventListener('DOMMouseScroll', callback, false);
		element.removeEventListener(eventName, callback, false);
	} else if (element.detachEvent)
		element.detachEvent("on" + eventName, callback);
}

function cancelEvent(e) {
	e = e ? e : window.event;
	if (e.stopPropagation)
		e.stopPropagation();
	if (e.preventDefault)
		e.preventDefault();
	e.cancelBubble = true;
	e.cancel = true;
	e.returnValue = false;
	return false;
}

/*
 * function MouseWheel(e) { e = e ? e : window.event; var wheelData = e.detail ?
 * e.detail * -1 : e.wheelDelta / 40;
 * 
 * //do something
 * 
 * return cancelEvent(e); }
 */