* client:可视区域
* clientWidth:可视区域的宽（没有边框），边框内部的宽度
* clientHeight:可视区域的高（没有边框），边框内部的高度
* clientTop:上边边框的宽度
* clientLeft:左边边框的宽度
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.login-header {
100%;
text-align: center;
height: 30px;
font-size: 24px;
line-height: 30px;
}
ul, li, ol, dl, dt, dd, div, p, span, h1, h2, h3, h4, h5, h6, a {
padding: 0px;
margin: 0px;
}
.login {
512px;
position: absolute;
border: #ebebeb solid 1px;
height: 280px;
left: 50%;
right: 50%;
background: #ffffff;
box-shadow: 0px 0px 20px #ddd;
z-index: 9999;
margin-left: -250px;
margin-top: 140px;
display: none;
}
.login-title {
100%;
margin: 10px 0px 0px 0px;
text-align: center;
line-height: 40px;
height: 40px;
font-size: 18px;
position: relative;
cursor: move;
-moz-user-select: none; /*火狐*/
-webkit-user-select: none; /*webkit浏览器*/
-ms-user-select: none; /*IE10*/
-khtml-user-select: none; /*早期浏览器*/
user-select: none;
}
.login-input-content {
margin-top: 20px;
}
.login-button {
50%;
margin: 30px auto 0px auto;
line-height: 40px;
font-size: 14px;
border: #ebebeb 1px solid;
text-align: center;
}
.login-bg {
100%;
height: 100%;
position: fixed;
top: 0px;
left: 0px;
background: #000000;
filter: alpha(opacity=30);
-moz-opacity: 0.3;
-khtml-opacity: 0.3;
opacity: 0.3;
display: none;
}
a {
text-decoration: none;
color: #000000;
}
.login-button a {
display: block;
}
.login-input input.list-input {
float: left;
line-height: 35px;
height: 35px;
350px;
border: #ebebeb 1px solid;
text-indent: 5px;
}
.login-input {
overflow: hidden;
margin: 0px 0px 20px 0px;
}
.login-input label {
float: left;
90px;
padding-right: 10px;
text-align: right;
line-height: 35px;
height: 35px;
font-size: 14px;
}
.login-title span {
position: absolute;
font-size: 12px;
right: -20px;
top: -30px;
background: #ffffff;
border: #ebebeb solid 1px;
40px;
height: 40px;
border-radius: 20px;
}
</style>
</head>
<body>
<div class="login-header"><a id="link" href="javascript:void(0);">点击，弹出登录框</a></div>
<div id="login" class="login">
<div id="title" class="login-title">登录会员
<span><a id="closeBtn" href="javascript:void(0);" class="close-login">关闭</a></span></div>
<div class="login-input-content">
<div class="login-input">
<label>用户名：</label>
<input type="text" placeholder="请输入用户名" name="info[username]" id="username" class="list-input">
</div>
<div class="login-input">
<label>登录密码：</label>
<input type="password" placeholder="请输入登录密码" name="info[password]" id="password" class="list-input">
</div>
</div>
<div id="loginBtn" class="login-button"><a href="javascript:void(0);" id="login-button-submit">登录会员</a></div>
</div><!--登录框-->
<div id="bg" class="login-bg"></div><!--遮挡层-->
<script src="../DOM/commer.js"></script>
<script>
//获取超链接，注册点击事件，显示登录框和遮挡层
ver("link").onclick=function () {
ver("login").style.display="block";
ver("bg").style.display="block";
};
//获取关闭，注册点击事件，隐藏登录框和遮挡层
ver("closeBtn").onclick=function () {
ver("login").style.display="none";
ver("bg").style.display="none";
};
//按下鼠标，移动鼠标，移动登录框
ver("title").onmousedown=function (e) {
var spaceX=e.clientX-ver("login").offsetLeft;
var spaceY=e.clientY-ver("login").offsetTop;
//移动事件
document.onmousemove=function (e) {
//新的可视区域的横坐标-spaceX====>新的值----》登录框的left属性
var x=e.clientX-spaceX+250;
var y=e.clientY-spaceY-140;
ver("login").style.left=x+"px";
ver("login").style.top=y+"px";
}
};
document.onmouseup=function () {
document.onmousemove=null;
}
</script>
</body>
</html>