How to get the value of a textbox right next to the modified textbox in a TD?

How to get the value of a textbox right next to the modified textbox in a TD?

I have a table and I want to get the value of the next textbox that is right next to the modified textbox.

I tried next().val() but it doesn't work.

  2. <tr>        
  3. <td><input type="text" id="amid" class="amount" width="140px" /> </td>
  4.         <td><asp:TextBox ID="dorc" class="d_orc" runat="server" Width="140px"></asp:TextBox> </td></tr>
I wanna get the amount of "amid" and then check the next textbox whether it is Debit or Credit to insert it into its array.

I tried the following code, but no luck. 

  2.            $('#amid').live('keyup', function () {

  4.               alert( $("#amid").next().val());
  5. }