select 左右多选 demo  html
    <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@include file="/common/commons.jsp"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>xxxxx</title>
</head>
<body>
<div class="title"><span>当前位置:xxxxxx>xxxxx>xxxxxx</span></div>
<form name="tmlgroupmember" method="post" >
<input type="hidden" name="muserTerminalgroup.terminalgrpidx" value="${muserTerminalgroup.terminalgrpidx}" />
<div class="editBlock">
<table class="table2" width="100%">
	<tbody>
		<tr>
			<th>xxxxxx</th>
			<td width="20%" >		
	         <input  type="text" value="${muserTerminalgroup.terminalgrpname}" 
	               readonly="readonly" maxlength="30" style="border: none"  id="groupname" />	     
			</td>			
		</tr>	
		<tr>
			<th width="90">xxxxxx</th>
			<td colspan="5">
			<select id="id_brand" class="width140p">
				<option value="">--请选择--</option>
				<s:iterator value="mtmlBrandList" id="bean" status="stat" var="v">
					<option value="${brandindex}">${brandname}</option>
				</s:iterator>
			</select>
			</td>
		</tr>
		<tr>
			<th>xxxxxxx</th>
			<td colspan="5">
			<div style="width: 400px; padding: 2px">  			 
			<input name="terminalmodelname" type="text" id="id_terminalmodelname" class="inputText" /> 
			<input type="button" id="query" value="查询" class="btns" />
			<input type="button" id="clear" value="清空" class="btns" />			
			</div>			
		 <table width="620" height="300">
			 <tr>
				<td width="204" valign="top">
						<select id="leftmodel" multiple="multiple" style="width: 250px; height: 300px" ondblclick="leftToRight();">
							<s:iterator value="mtmlInfos" id="bean" status="stat" var="v">
								<option value="${terminalindex}">${terminalmodelname}</option>
							</s:iterator>
						</select>					
				</td>
				<td width="207" align=center style="width: 40px;">
					<input type="button" value=">  " title="选择单个" onClick="leftToRight();" class="inputButton" />
					<br />
					<br />
					<input type="button" value=">>" title="全部选择" onClick="leftToRightAll();" class="inputButton" /> 
					<br />
					<br />
					<br />
					<br />
					<br />
					<input type="button" value="<  " title="移除单个" onClick="rightToLeft();" class="inputButton" />
				     <br />
					<br />
					<input type="button" value="<<" title="全部移除" onClick="rightToLeftAll();" class="inputButton" />
				</td>
				<td width="204" valign="top">
					<select name="rightmodel" id="rightmodel" multiple="multiple" style="width: 250px; height: 300px" ondblclick="rightToLeft();">
						<s:iterator value="muserTerminalgroupExtendsList" var="v">
						<option value="${terminalindex}">${terminalmodelname}</option>
						</s:iterator>
					</select>
				</