<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01
Transitional//EN"
<html>
<head>
<title>Select下拉列表框进行多选、移除、交换内容</title>
<meta http-equiv="Content-Type"
content="text/html; charset=gb2312">
</head>
<body style="font-size:12px">
<form name="form1" method="post"
action="">
<table width="380" border="0"
align="center" cellpadding="0"
cellspacing="0">
<tr>
<td width="150"><table
width="150" border="0" cellpadding="1"
cellspacing="1" bgcolor="#CAFAFC">
<tr>
<td
height="25" background="/jscss/demoimg/200908/selectbg.jpg"
bgcolor="#FFFFFF"> 请选择：</td>
</tr>
<tr>
<td
align="center" bgcolor="#FFFFFF"><select
name="sel_place1" size="6" multiple
id="sel_place1" style="width:100px " >
<option value="sel1">江苏省</option>
<option value="sel2">广东省</option>
<option value="sel3">河南省</option>
<option value="sel4">吉林省</option>
<option value="sel5">浙江省</option>
</select></td>
</tr>
</table></td>
<td width="80"
align="center" valign="bottom"><input
name="sure1" type="button" id="sure1"
onClick="allsel(document.form1.sel_place2,document.form1.sel_place1);"
value="<<">
<input name="sure2"
type="button" id="sure2"
onClick="allsel(document.form1.sel_place1,document.form1.sel_place2);"
value=">>" align="center"
height="2"></td>
<td width="150"><table
width="150" border="0" cellpadding="1"
cellspacing="1" bgcolor="#CAFAFC">
<tr>
<td
height="25" background="/jscss/demoimg/200908/selectbg.jpg"
bgcolor="#FFFFFF"> 已选择：</td>
</tr>
<tr>
<td
align="center" bgcolor="#FFFFFF"><select
name="sel_place2" size="6" multiple
id="sel_place2" style="width:100px ">
</select></td>
</tr>
</table></td>
</tr>
</table>
</form>
<script language="javascript">
function allsel(n1,n2)
{
while(n1.selectedIndex!=-1)
{
var indx=n1.selectedIndex;
var t=n1.options[indx].text;
n2.options.add(new Option(t));
n1.remove(indx);
}
}
</script>
</body>
</html>
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