i think but not sure u write you script manager tag after the form tag. not after body tag.
<body><asp:scriptmanager id="ScriptManager1" runat="server" xmlns:asp="#unknown"></asp:scriptmanager></body>
in place of write
<body>
<form id="form1" runat="server">
<%-- <div style=" padding:1% 1% 1% 1%; width:98%; background-color:#F5F6F7; border-removeddotted 1px #D8D8D8">
<asp:ScriptManager ID="ScriptManager1" runat="server">