.net中实现listBox左右移动

<div style="width:200px; float:left;">
    <table>
    <tr>
        <td  width="50%">
        <asp:ListBox ID="ListBox2" runat="server" Height="128px" Width="148px">
            <asp:ListItem Value="张三"></asp:ListItem>
            <asp:ListItem Value="李四"></asp:ListItem>
            <asp:ListItem>王五</asp:ListItem>
            </asp:ListBox>
        </td>
        <td>
            <asp:Button ID="Button2" runat="server" Text="《"></asp:Button>
            <asp:Button ID="Button1" runat="server" Text="<"></asp:Button>
            <asp:Button ID="Button3" runat="server" Text=">"></asp:Button>
            <asp:Button ID="Button4" runat="server" Text="》"></asp:Button>
        </td>
        <td align="left" width="50%">
             <asp:ListBox ID="ListBox1" runat="server" Height="128px" Width="148px"></asp:ListBox>
        </td>
    </tr>
    </table>
    </div>