右下角message

    #msg_win{border:1px solid #f80;background:#9eceeb;width:300px;position:absolute;right:0;margin:0px;display:none;overflow:hidden;z-index:99;}
    #msg_win .icos{position:absolute;top:2px;*top:0px;right:2px;z-index:9;}
    .icos a{float:left;color:#833B02;margin:1px;text-align:center;text-decoration:none;font-family:webdings;}
    .icos a:hover{color:#fff;}
    #msg_title{background:#9eceeb;border-bottom:1px solid #f80;color:#000;height:25px;line-height:25px;text-indent:5px; font-size:14px; color:Red;}
    #msg_content{margin:8px;width:300px;height:200px;overflow:hidden;}

    <div id="msg_win" style="display: none; top: 490px; visibility: visible; opacity: 1;">
        <div class="icos">
            <a id="msg_min" title="最小化" href="javascript:void(0);">_</a><a id="msg_close" title="关闭"
                href="javascript:void(0);">×</a></div>
        <div id="msg_title">
            订单受理提醒：</div>
        <div id="msg_content">
        </div>
    </div>

        var Message = {
            set: function () {//最小化与恢复状态切换
                var set = this.minbtn.status == 1 ? [0, 1, 'block', this.char[0], '最小化'] : [1, 0, 'none', this.char[1], '恢复'];
                this.minbtn.status = set[0];
                this.win.style.borderBottomWidth = set[1];
                this.content.style.display = set[2];
                this.minbtn.innerHTML = set[3]
                this.minbtn.title = set[4];
                this.win.style.top = this.getY().top;
            },
            close: function () {//关闭
                this.win.style.display = 'none';
                window.onscroll = null;
            },
            setOpacity: function (x) {//设置透明度
                var v = x >= 100 ? '' : 'Alpha(opacity=' + x + ')';
                this.win.style.visibility = x <= 0 ? 'hidden' : 'visible'; //IE有绝对或相对定位内容不随父透明度变化的bug
                this.win.style.filter = v;
                this.win.style.opacity = x / 100;
            },
            show: function () {//渐显
                clearInterval(this.timer2);
                var me = this, fx = this.fx(0, 100, 0.1), t = 0;
                this.timer2 = setInterval(function () {
                    t = fx();
                    me.setOpacity(t[0]);
                    if (t[1] == 0) { clearInterval(me.timer2) }
                }, 10);
            },
            fx: function (a, b, c) {//缓冲计算
                var cMath = Math[(a - b) > 0 ? "floor" : "ceil"], c = c || 0.1;
                return function () { return [a += cMath((b - a) * c), a - b] }
            },
            getY: function () {//计算移动坐标
                var d = document, b = document.body, e = document.documentElement;
                var s = Math.max(b.scrollTop, e.scrollTop);
                var h = /BackCompat/i.test(document.compatMode) ? b.clientHeight : e.clientHeight;
                var h2 = this.win.offsetHeight;
                return { foot: s + h + h2 + 2 + 'px', top: s + h - h2 - 2 + 'px' }
            },
            moveTo: function (y) {//移动动画
                clearInterval(this.timer);
                var me = this, a = parseInt(this.win.style.top) || 0;
                var fx = this.fx(a, parseInt(y));
                var t = 0;
                this.timer = setInterval(function () {
                    t = fx();
                    me.win.style.top = t[0] + 'px';
                    if (t[1] == 0) {
                        clearInterval(me.timer);
                        me.bind();
                    }
                }, 10);
            },
            bind: function () {//绑定窗口滚动条与大小变化事件
                var me = this, st, rt;
                window.onscroll = function () {
                    clearTimeout(st);
                    clearTimeout(me.timer2);
                    me.setOpacity(0);
                    st = setTimeout(function () {
                        me.win.style.top = me.getY().top;
                        me.show();
                    }, 600);
                };
                window.onresize = function () {
                    clearTimeout(rt);
                    rt = setTimeout(function () { me.win.style.top = me.getY().top }, 100);
                }
            },
            init: function () {//创建HTML
                function $(id) { return document.getElementById(id) };
                this.win = $('msg_win');
                var set = { minbtn: 'msg_min', closebtn: 'msg_close', title: 'msg_title', content: 'msg_content' };
                for (var Id in set) { this[Id] = $(set[Id]) };
                var me = this;
                this.minbtn.onclick = function () { me.set(); this.blur() };
                this.closebtn.onclick = function () { me.close() };
                this.char = navigator.userAgent.toLowerCase().indexOf('firefox') + 1 ? ['_', '::', '×'] : ['0', '2', 'r']; //FF不支持webdings字体
                this.minbtn.innerHTML = this.char[0];
                this.closebtn.innerHTML = this.char[2];
                setTimeout(function () {//初始化最先位置
                    me.win.style.display = 'block';
                    me.win.style.top = me.getY().foot;
                    me.moveTo(me.getY().top);
                }, 0);
                return this;
            }
        };