js实现这个留言窗口可在网页中随意拖动特效，带缩小、放大、关闭功能，兼容当前主流浏览器。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<meta name="keywords" content="武鸣人网站,武鸣信息网,武鸣本地网,武鸣信息资源平台,减肥,健身,励志,励志语录,js特效,网页特效,www.wuming.ren">
<meta name="description" content="欢迎来到武鸣人信息资源平台，各种信息免费发布，资源共享合作共赢，分享互联网流行的励志语录经典短句，减肥健身健康小常识及打卡记录，收集各种js特效代码。">
<title>留言窗口可在网页中随意拖动效果_武鸣人</title>
<style type="text/css">
<!--
body {
text-align:left;
margin:0;
font:normal 12px Verdana, Arial;
background:#FFEEFF
}
form {
margin:0;
font:normal 12px Verdana, Arial;
}
table,input {
font:normal 12px Verdana, Arial;
}
a:link,a:visited{
text-decoration:none;
color:#333333;
}
a:hover{
text-decoration:none;
color:#FF6600
}
#main {
width:400px;
position:absolute;
left:600px;
top:100px;
background:#EFEFFF;
text-align:left;
filter:Alpha(opacity=90)
}
#ChatHead {
text-align:right;
padding:3px;
border:1px solid #003399;
background:#DCDCFF;
font-size:11px;
color:#3366FF;
cursor:move;
}
#ChatHead a:link,#ChatHead a:visited, {
font-size:14px;
font-weight:bold;
padding:0 3px
}
#wuming_ren {
border:1px solid #003399;
border-top:none;
padding:2px;
}
#www_wuming_ren {
height:200px;
padding:6px;
overflow-y:scroll;
word-break: break-all
}
#ChatBtn {
border-top:1px solid #003399;
padding:2px
}
-->
</style>
<script language="javascript" type="text/javascript">
<!--
function $(d){return document.getElementById(d);}
function gs(d){var t=$(d);if (t){return t.style;}else{return null;}}
function gs2(d,a){
if (d.currentStyle){
var curVal=d.currentStyle[a]
}else{
var curVal=document.defaultView.getComputedStyle(d, null)[a]
}
return curVal;
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function ChatHidden(){gs("wuming_ren").display = "none";}
function ChatShow(){gs("wuming_ren").display = "";}
function ChatClose(){gs("main").display = "none";}
function ChatSend(obj){
var o = obj._wuming_ren;
if (o.value.length>0){
$("www_wuming_ren").innerHTML += "<strong>sky说：</strong>"+o.value+"<br/>";
o.value='';
}
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
if (document.getElementById){
(
function(){
if (window.opera){ document.write("<input type='hidden' id='Q' value=' '>"); }
var n = 500;
var dragok = false;
var y,x,d,dy,dx;
function move(e)
{
if (!e) e = window.event;
if (dragok){
d.style.left = dx + e.clientX - x + "px";
d.style.top = dy + e.clientY - y + "px";
return false;
}
}
function down(e){
if (!e) e = window.event;
var temp = (typeof e.target != "undefined")?e.target:e.srcElement;
if (temp.tagName != "HTML"|"BODY" && temp.className != "dragclass"){
temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
}
if('TR'==temp.tagName){
temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
}
if (temp.className == "dragclass"){
if (window.opera){ document.getElementById("Q").focus(); }
dragok = true;
temp.style.zIndex = n++;
d = temp;
dx = parseInt(gs2(temp,"left"))|0;
dy = parseInt(gs2(temp,"top"))|0;
x = e.clientX;
y = e.clientY;
document.onmousemove = move;
return false;
}
}
function up(){
dragok = false;
document.onmousemove = null;
}
document.onmousedown = down;
document.onmouseup = up;
}
)();
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
-->
</script>
</head>
<body>
<a href="https://www.wuming.ren">武鸣人</a>，各种信息资源免费发布，分享励志语录经典短句，减肥健身常识，各种js特效代码。网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)<hr>
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<script type="text/javascript" src="https://www.wuming.ren/ad/tc.js"></script>
<script type="text/javascript" src="https://www.wuming.ren/ad/a.js"></script>
<div id="main" class="dragclass" style="left:600px;top:300px;">
<div id="ChatHead">
<a href="#" onclick="ChatHidden();">-</a>
<a href="#" onclick="ChatShow();">+</a>
<a href="#" onclick="ChatClose();">x</a>
</div>
<div id="wuming_ren">
<div id="www_wuming_ren">武鸣人信息资源平台，各种信息免费发布，资源共享合作共赢！<br />这个窗口可拖动、缩小、关闭。</div>
<div id="ChatBtn">
<form action="" name="chat" method="post">
<textarea name="_wuming_ren" rows="3" style="width:350px">
www_wuming_ren
</textarea>
</form>
</div>
</div>
</div>
</body>
</html>