ASP.NET

Async="true"

<%@ Page Async="true" Language="C#" AutoEventWireup="true" CodeFile="ProviderAlerts.aspx.cs" Inherits="ProviderAlerts" %>

<script type="text/javascript">
    <!-- Begin
    function reFresh() {
      location.reload(true)
    }
    /* Set the number below to the amount of delay, in milliseconds,
    you want between page reloads: 1 minute = 60000 milliseconds. */
    window.setInterval("reFresh()",300000);
    // End -->
</script>

<input type="text" id="Parent_txtName" name="Parent$txtName" />

Sys.WebForm.Init( ... );

Sys$WebForm$Init : function ( ...) {}

<asp:Panel runat="server" ID="pnlSearch" DefaultButton="btnSearch">
    <asp:TextBox runat="server" ID="txtSearch"></asp:TextBox>
    <asp:Button runat="server" ID="btnSearch" />
</asp:Panel>

if (typeof (Sys) !== 'undefined')  Sys.Application.notifyScriptLoaded();