JS 弹窗到右下角

<div id="msg_win" style="display: block; top: 490px; visibility: visible; opacity: 1;">
<div class="icos"><a id="msg_min" title="" href="javascript:void 0"></a><a id="msg_close" title="关闭" href="javascript:void 0">×</a></div>
<div id="msg_title">您有新文件</div>
<audio controls="controls" autoplay="autoplay">
<source src="~/Content/MP3/Message.mp3" type="audio/mpeg" />
</audio>
<div id="msg_content"></div>
</div>

<style type="text/css">
#msg_win {
border: 1px solid #A67901;
background: #EAEAEA;
width: 180px;
position: absolute;
right: 0;
font-size: 12px;
font-family: Arial;
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;
font-weight: bold;
width: 14px;
height: 22px;
line-height: 22px;
padding: 1px;
text-decoration: none;
font-family: webdings;
}

.icos a:hover {
color: #fff;
}

#msg_title {
background: #FECD00;
border-bottom: 1px solid #A67901;
border-top: 1px solid #FFF;
border-left: 1px solid #FFF;
color: #000;
height: 25px;
line-height: 25px;
text-indent: 5px;
}

#msg_content {
margin: 5px;
margin-right: 0;
width: 230px;
height: auto;
overflow: visible;
}
</style>
<!-- 弹窗样式 -->
<script type="text/javascript">
//function getleader() {
// $.getJSON("/homepage/getleader", {}, function (data) {
// $("#leader").html(data);
// })
//}
//function getpop() {
// $.getJSON("/homepage/Getpop", {}, function (data) {
// $("#msg_content").html(data);
// });
//}
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], '展开'];
// 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;
}
};
Message.init();
</script>