阻止网页内部滚动条mousewheel事件冒泡

function preventScroll(id){
    var _this = document.getElementById(id);
    if(navigator.userAgent.indexOf("Firefox")>0){
        _this.addEventListener('DOMMouseScroll',function(e){
            _this.scrollTop += e.detail > 0 ? 60 : -60;
            e.preventDefault();
        },false);
    }else{
        _this.onmousewheel = function(e){
            e = e || window.event;
            _this.scrollTop += e.wheelDelta > 0 ? -60 : 60;
            return false;
        };
    }
    return this;
}  

转自 ：http://blog.csdn.net/jyy_12/article/details/6878049