添加滚动条的几个样式未完待续

    position: relative;
    height:expression((document.body.clientHeight - 160) + "px");
    overflow:auto;
    border-top:1px solid #b2c8d0;
    border-bottom:1px solid #b2c8d0;
    scrollbar-face-color: #DBEBFE; /*设置滚动条外观颜色的*/
 　scrollbar-shadow-color: #B8D6FA; /*设置滚蛋条阴影颜色的*/
    scrollbar-highlight-color: #FFFFFF;
    scrollbar-3dlight-color: #DBEBFE;
    scrollbar-darkshadow-color:#458CE4;
    scrollbar-track-color: #FFFFFF;
    scrollbar-arrow-color: #458CE4";