listBox moves left and right_html/css_WEB-ITnose

 1  <div style="width:200px; float:left;">  2     <table>  3     <tr>  4         <td  width="50%">  5         <asp:ListBox ID="ListBox2" runat="server" Height="128px" Width="148px"> 6             <asp:ListItem Value="张三"></asp:ListItem> 7             <asp:ListItem Value="李四"></asp:ListItem> 8             <asp:ListItem>王五</asp:ListItem> 9             </asp:ListBox>10         </td> 11         <td> 12             <asp:Button ID="Button2" runat="server" Text="《"></asp:Button>13             <asp:Button ID="Button1" runat="server" Text="<"></asp:Button>14             <asp:Button ID="Button3" runat="server" Text=">"></asp:Button>15             <asp:Button ID="Button4" runat="server" Text="》"></asp:Button>16         </td> 17         <td align="left" width="50%"> 18              <asp:ListBox ID="ListBox1" runat="server" Height="128px" Width="148px"></asp:ListBox>19         </td> 20     </tr> 21     </table> 22     </div> 

Today I used the listbox to move left and right and found one online