同一个页面 显示多个div浮窗（多个浮窗的内容并不一样，也在不同的div中 演示代码里是只举例了一种） 只有一个能移动 请问那个是判断我现在移动的是哪个浮窗 ，怎么才能分别移动 不冲突呢？ 如果我描述的不够清楚 我还可以补充说明。
演示代码如下：
<html>
<head>
<title>Js弹出浮动窗口，支持鼠标拖动和关闭</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
/**
关于一些参数说明：
*bodycontent:要在窗口显示的内容，dom对象
*title:窗口标题，字符串类型
*removeable:窗口能否拖动，布尔类型
*注意：内容窗体的高度是height-30px，请计算好你要显示的内容的高度和宽度。弹出窗的id为"223238909"，所以你的页面不要再取值为"223238909"的id了，以防js执行出错*/
function createdialog(width,height,bodycontent,title,removeable){
if(document.getElementById("www_jb51_net")==null){
/*创建窗口的组成元素*/
var dialog = document.createElement("div");
var dialogtitlebar= document.createElement("div");
var dialogbody = document.createElement("div");
var dialogtitleimg = document.createElement("span");
var dialogtitle = document.createElement("span");
var dialogclose = document.createElement("span");
var closeaction = document.createElement("button");
/*为窗口设置一个id，id如此怪异是为了尽量避免与其他用户取的id相同而出错*/
dialog.id = "223238909";
/*组装对话框标题栏,按从里到外的顺序组装*/
dialogtitle.innerHTML = title;
dialogtitlebar.appendChild(dialogtitleimg);
dialogtitlebar.appendChild(dialogtitle);
dialogtitlebar.appendChild(dialogclose);
dialogclose.appendChild(closeaction);
/*组装对话框主体内容*/
if(bodycontent!=null){
bodycontent.style.display = "block";
dialogbody.appendChild(bodycontent);
}
/*组装成完整的对话框*/
dialog.appendChild(dialogtitlebar);
dialog.appendChild(dialogbody);
/*设置窗口组成元素的样式*/
var templeft,temptop,tempheight//窗口的位置（将窗口放在页面中间的辅助变量）
var dialogcssText,dialogbodycssText;//拼出dialog和dialogbody的样式字符串
templeft = (document.body.clientWidth-width)/2;
temptop = (document.body.clientHeight-height)/2;
tempheight= height-30;
dialogcssText= "position:absolute;background:#65c294;padding:1px;border:4px;top:"+temptop+"px;left:"+templeft+"px;height:"+height+"px;width:"+width+"px;";
dialogbodycssText = "width:100%;background:#ffffff;"+"height:" + tempheight + "px;";
dialog.style.cssText = dialogcssText;
dialogtitlebar.style.cssText = "height:30px;width:100%;background:url(images/titlebar.png) repeat;cursor:move;";
dialogbody.style.cssText = dialogbodycssText;
dialogtitleimg.style.cssText = "float:left;height:20px;width:20px;background:url(images/40.gif);"+"display:block;margin:4px;line-height:20px;";
dialogtitle.style.cssText = "font-size:16px;float:left;display:block;margin:4px;line-height:20px;";
dialogclose.style.cssText = "float:right;display:block;margin:4px;line-height:20px;";
closeaction.style.cssText = "height:20px;width:24px;border-width:1px;"+"background-image:url(images/close.png);cursor:pointer;";
/*为窗口元素注册事件*/
var dialogleft = parseInt(dialog.style.left);
var dialogtop = parseInt(dialog.style.top);
var ismousedown = false;//标志鼠标是否按下
/*关闭按钮的事件*/
closeaction.onclick = function(){
dialog.parentNode.removeChild(dialog);
}
/*实现窗口的移动，这段代码很典型，网上很多类似的代码*/
if(removeable == true){
var ismousedown = false;
var dialogleft,dialogtop;
var downX,downY;
dialogleft = parseInt(dialog.style.left);
dialogtop = parseInt(dialog.style.top);
dialogtitlebar.onmousedown = function(e){
ismousedown = true;
downX = e.clientX;
downY = e.clientY;
}
document.onmousemove = function(e){
if(ismousedown){
dialog.style.top = e.clientY - downY + dialogtop + "px";
dialog.style.left = e.clientX - downX + dialogleft + "px";
}
}
/*松开鼠标时要重新计算当前窗口的位置*/
document.onmouseup = function(){
dialogleft = parseInt(dialog.style.left);
dialogtop = parseInt(dialog.style.top);
ismousedown = false;
}
}
return dialog;
}//end if(if的结束)
}
</script>
<style>
table{background:#b2d235;}
button{font-size:12px;height:23;background:#ece9d8;border-width:1;}
#linkurl,#linkname,#savelink{width:100px;}
</style>
</head>
<body>
<!-- 显示窗口的地方 -->
<div id="here"></div><a id="clickhere" href="#">点击生成窗口</a>
<!-- 要嵌入到窗口的内容 -->
<div id="login" style="display:none;">
<form action="#" method="post" onSubmit="return false;">
<table width="400" height="95">
<tr>
<td width="78">链接文字</td>
<td width="168"><input name="link.name" type="text" value="浮窗测试"/></td>
<td width="138" id="linktext"></td>
</tr>
<tr>
<td>链接地址</td>
<td><input name="link.url" type="text" value="f"/></td>
<td id="linkurl"></td>
</tr>
<tr>
<td></td>
<td><button type="submit" style="float:right;">添加</button></td>
<td id="savelink"></td>
</tr>
</table>
</form>
</div>
<script type="text/javascript">
var here = document.getElementById("here");
var login = document.getElementById("login");
var clickhere = document.getElementById("clickhere");
clickhere.onclick = function(){
here.appendChild(createdialog(400,95+30,login,"中国外汇交易中心",true));
}
</script>
</body>
</html>
你代码有问题，你这个代码原本是控制只能生成一个的if (document.getElementById("www_jb51_net") == null) ，这句就是，创建这个dom对象的代码视乎删除了，所以生成了多个
但是login这个div被被添加到最后一个创建的浮动窗体里面的，你添加多个其他浮动的都没内容了。改下面的就行，mousemove，mouseup放函数外部，用全局变量记录住相关对象和位置信息即可。
<html>
<head>
<title>Js弹出浮动窗口，支持鼠标拖动和关闭</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
/**
关于一些参数说明：
*bodycontent:要在窗口显示的内容，dom对象
*title:窗口标题，字符串类型
*removeable:窗口能否拖动，布尔类型
*注意：内容窗体的高度是height-30px，请计算好你要显示的内容的高度和宽度。弹出窗的id为"223238909"，所以你的页面不要再取值为"223238909"的id了，以防js执行出错*/
function createdialog(width, height, bodycontent, title, removeable) {
/*创建窗口的组成元素*/
var dialog = document.createElement("div");
var dialogtitlebar = document.createElement("div");
var dialogbody = document.createElement("div");
var dialogtitleimg = document.createElement("span");
var dialogtitle = document.createElement("span");
var dialogclose = document.createElement("span");
var closeaction = document.createElement("button");
/*为窗口设置一个id，id如此怪异是为了尽量避免与其他用户取的id相同而出错*/
dialog.id = "223238909";
/*组装对话框标题栏,按从里到外的顺序组装*/
dialogtitle.innerHTML = title;
dialogtitlebar.appendChild(dialogtitleimg);
dialogtitlebar.appendChild(dialogtitle);
dialogtitlebar.appendChild(dialogclose);
dialogclose.appendChild(closeaction);
/*组装对话框主体内容*/
if (bodycontent != null) {////////////////////如果要设置不同内容，最好是传入不同的dom对象，同一个要clone过，要不会从其他对象对象中移除而添加到最新append的容器里面
bodycontent = bodycontent.cloneNode(true)
bodycontent.style.display = "block";
dialogbody.appendChild(bodycontent);
}
/*组装成完整的对话框*/
dialog.appendChild(dialogtitlebar);
dialog.appendChild(dialogbody);
/*设置窗口组成元素的样式*/
var templeft, temptop, tempheight//窗口的位置（将窗口放在页面中间的辅助变量）
var dialogcssText, dialogbodycssText;//拼出dialog和dialogbody的样式字符串
templeft = (document.body.clientWidth - width) / 2;
temptop = (document.body.clientHeight - height) / 2;
tempheight = height - 30;
dialogcssText = "position:absolute;background:#65c294;padding:1px;border:4px;top:" + temptop + "px;left:" + templeft + "px;height:" + height + "px;width:" + width + "px;";
dialogbodycssText = "width:100%;background:#ffffff;" + "height:" + tempheight + "px;";
dialog.style.cssText = dialogcssText;
dialogtitlebar.style.cssText = "height:30px;width:100%;background:url(images/titlebar.png) repeat;cursor:move;";
dialogbody.style.cssText = dialogbodycssText;
dialogtitleimg.style.cssText = "float:left;height:20px;width:20px;background:url(images/40.gif);" + "display:block;margin:4px;line-height:20px;";
dialogtitle.style.cssText = "font-size:16px;float:left;display:block;margin:4px;line-height:20px;";
dialogclose.style.cssText = "float:right;display:block;margin:4px;line-height:20px;";
closeaction.style.cssText = "height:20px;width:24px;border-width:1px;" + "background-image:url(images/close.png);cursor:pointer;";
/*关闭按钮的事件*/
closeaction.onclick = function () {
dialog.parentNode.removeChild(dialog);
}
/*实现窗口的移动，这段代码很典型，网上很多类似的代码*/
if (removeable == true) {
/////////////////////////////////////////这里初始化当前拖拽的对象和相关位置变了信息
dialogtitlebar.onmousedown = function (e) {
dialogleft = parseInt(dialog.style.left);
dialogtop = parseInt(dialog.style.top);
downX = e.clientX;
downY = e.clientY;
currentObj = dialog
}
}
return dialog;
}
var currentObj, dialogleft, dialogtop, downX, downY
document.onmousemove = function (e) {
if (currentObj) {console.log(downX,dialogleft,downY,dialogtop)
currentObj.style.top = e.clientY - downY + dialogtop + "px";
currentObj.style.left = e.clientX - downX + dialogleft + "px";
}
}
/*松开鼠标时要重新计算当前窗口的位置*/
document.onmouseup = function () {
currentObj=null
}
</script>
<style>
table {
background: #b2d235;
}
button {
font-size: 12px;
height: 23;
background: #ece9d8;
border-width: 1;
}
#linkurl, #linkname, #savelink {
width: 100px;
}
</style>
</head>
<body>
<!-- 显示窗口的地方 -->
<div id="here"></div><a id="clickhere" href="#">点击生成窗口</a>
<!-- 要嵌入到窗口的内容 -->
<div id="login" style="display:none;">
<form action="#" method="post" onsubmit="return false;">
<table width="400" height="95">
<tr>
<td width="78">链接文字</td>
<td width="168"><input name="link.name" type="text" value="浮窗测试" /></td>
<td width="138" id="linktext"></td>
</tr>
<tr>
<td>链接地址</td>
<td><input name="link.url" type="text" value="f" /></td>
<td id="linkurl"></td>
</tr>
<tr>
<td></td>
<td><button type="submit" style="float:right;">添加</button></td>
<td id="savelink"></td>
</tr>
</table>
</form>
</div>
<script type="text/javascript">
var here = document.getElementById("here");
var login = document.getElementById("login");
var clickhere = document.getElementById("clickhere");
clickhere.onclick = function () {
here.appendChild(createdialog(400, 95 + 30, login, "中国外汇交易中心", true));
}
</script>
</body>
</html>