问使用MouseWheel移动图像

EN

 window.onload = function() {
        if (document.body.addEventListener) {
                document.body.addEventListener("mousewheel", MouseWheelHandler, false);
                document.body.addEventListener("DOMMouseScroll", MouseWheelHandler, false);
        }
        else document.body.attachEvent("onmousewheel", MouseWheelHandler);

        function MouseWheelHandler(e){
            // cross-browser wheel delta
        var e = window.event || e; // old IE support
        var delta = Math.max(-1, Math.min(1, (e.wheelDelta || -e.detail)));

        img1.style.left = Math.max(0, Math.min(1100, parseInt(img1.style.left) + (delta))) + "px";

        return false;
        }
    };