用户用鼠标点击一下输入框，垃圾弹出一个内容选择图层，选择后输入框立即获取到所选中的内容。
<!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>仿QQ邮箱点击文本框弹出层选择收件人的效果_武鸣人</title>
<style type="text/css">
.black_overlay{display: none;position: absolute;top: 0%;left: 0%;width: 100%;height: 100%;background-color:#FFFFFF;z-index:1001;-moz-opacity: 0.8;opacity:.80;filter: alpha(opacity=80);}
.white_content{display: none;position: absolute;top: 25%;left: 25%;width: 50%;height: 50%;padding: 16px;border: 16px solid orange;margin:-32px;background-color: white;z-index:1002;overflow: auto;}
</style>
<script language="javascript" type="text/javascript">
function moveselect(obj,target,all){
if (!all) all=0
if (obj!="[object]") obj=eval("document.all."+obj)
target=eval("document.all."+target)
if (all==0)
{
while (obj.selectedIndex>-1){
//alert(obj.selectedIndex)
mot=obj.options[obj.selectedIndex].text
mov=obj.options[obj.selectedIndex].value
obj.remove(obj.selectedIndex)
var newoption=document.createElement("OPTION");
newoption.text=mot
newoption.value=mov
target.add(newoption)
}
}//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)
else
{
//alert(obj.options.length)
for (i=0;i<obj.length;i++)
{
mot=obj.options[i].text
mov=obj.options[i].value
var newoption=document.createElement("OPTION");
newoption.text=mot
newoption.value=mov
target.add(newoption)
}
obj.options.length=0
}
}
function dakai(){
document.getElementById('light').style.display='block';
document.getElementById('fade').style.display='block'
}
function guanbi(){
//下面上把右边select的值传到文本框内
var yuanGong=document.getElementById("yuanGong")
yuanGong.value=""//如果不加这句，则每次选择的结果追加
var huoQu=document.getElementById("D2")
for(var k=0;k<huoQu.length;k++)
yuanGong.value=yuanGong.value + huoQu.options[k].value + " "//这里的" "中间为空格，为字符间的分隔符，可以改成别的
document.getElementById('light').style.display='none';
document.getElementById('fade').style.display='none'
}//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>
<input type="text" id="yuanGong" onclick="dakai()" size="50">
<div id="light" class="white_content">
<table border="1" width="350" id="table4" bordercolor="#CCCCCC" bordercolordark="#CCCCCC" bordercolorlight="#FFFFFF" cellpadding="3" cellspacing="0">
<tr>
<td width="150" height="200" align="center" valign="middle">
该部门员工
<select size="12" name="D1" ondblclick="moveselect(this,'D2')" multiple="multiple" style="width:140px">
<option value="员工1">员工1</option>
<option value="员工2">员工2</option>
<option value="员工3">员工3</option>
</select>
</td>
<td width="50" height="200" align="center" valign="middle">
<input type="button" value="<<" name="B3" onclick="moveselect('D2','D1',1)" /><br />
<input type="button" value="<" name="B5" onclick="moveselect('D2','D1')" /><br />
<input type="button" value=">" name="B6" onclick="moveselect('D1','D2')" /><br />
<input type="button" value=">>" name="B4" onclick="moveselect('D1','D2',1)" /><br />
</td>
<td width="150" height="200" align="center" valign="middle">
未划分部门员工
<select size="12" name="D2" id="D2" ondblclick="moveselect(this,'D1')" multiple="multiple" style="width:140px">
<option value="员工4">员工4</option>
<option value="员工5">员工5</option>
</select>
</td>
</tr>
</table>
<a href="javascript:void(0)" onclick="guanbi()">确定</a>
<input type="button" name="button" onclick="guanbi()" value="也可以使用按钮来确定" />
</div>
<div id="fade" class="black_overlay"></div>
</body>
</html>