<asp:UpdatePanel ID="asypnl" runat="server">
   <ContentTemplate>
      <asp:Wizard />
      <StartNavigationTemplate>
      </StartNavigationTemplate>
      <FinishNavigationTemplate>
      </FinishNavigationTemplate>
      <WizardSteps>
         <asp:WizardStep ID="WizardStep1" runat="server">
            <asp:Panel runat="server" ID="pnlGiftInfo">
               <td>
                  <asp:DropDownList ID="DropDownPayment" runat="server">
                     <asp:ListItem Selected="True" Value="0">Gift</asp:ListItem>
                     <asp:ListItem Value="1">Pledge</asp:ListItem>
                  </asp:DropDownList>
               </td>
            </asp:Panel>
         </asp:WizardStep>
      </WizardSteps>
      <asp:Panel runat="server" ID="pnlOutput">
         <%-- Content comes from the database OutputHtml Colunm--%>
      </asp:Panel>
   </ContentTemplate>
</asp:UpdatePanel>

<p>Thank you for your <span id "ddlGift">gift</span><span id "ddlPayment">payment</span> of
    {Amount} to the {Comm}
<script type="text/javascript" language="javascript">
        var p = document.getElementById("DropDownPayment");
        var eledropdownPayment = p.options[p.selectedIndex].value;
        var ddlGift = document.getElementById("ddlGift");
        var ddlPayment = document.getElementById("ddlPayment");
        if (eledropdownPayment == "0") {
            ddlGift.style.display = "block";
            ddlPayment.style.display = "none";
        } else {
            ddlGift.style.display = "none";
            ddlPayment.style.display = "block";
        }
</script>

setTimeout(function() {
                var p = document.getElementById("DropDownPayment");
                var eledropdownPayment = p.options[p.selectedIndex].value;
                var ddlGift = document.getElementById("Gift");
                var ddlPayment = document.getElementById("ddlSelectionPledge");
                    if (eledropdownPayment == "0")
                    {
                    ddlGift.style.display = "block";
                    ddlPayment.style.display = "none";
                    }
                    else
                    {
                    ddlGift.style.display = "none";
                    ddlPayment.style.display = "block";
                    }
             }, 300); //delay execution by 300 miliseconds