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<style type="text/css">
*{ margin:0px auto; padding:0px; font-family:微软雅黑; font-size:14px;}
</style>
</head>
<body>
<div style="width:600px; height:500px; margin-top:20px">
<div style="width:200px; height:300px; float:left">
<select id="list1" size="10" style="width:200px; height:300px">
<option>山东</option>
<option>北京</option>
<option>河北</option>
<option>黑龙江</option>
<option>河南</option>
</select>
</div>
<div style="width:80px; height:300px; float:left">
<input type="button" value="单移" id="btn1" style="width:70px; height:30px" onclick="Dan()"/>
<input type="button" value="全移" id="btn2" style="width:70px; height:30px" onclick="Duo()"/>
</div>
<div style="width:200px; height:300px; float:left">
<select id="list2" size="10" style="width:200px; height:300px">
</select>
</div>
</div>
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原文地址：http://www.cnblogs.com/xiaofox0018/p/5899410.html
