HI Team,
Please see the following code
===============
Master page code
===============
<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="LayoutDemo.master.cs"
    Inherits="MasterLayout.LayoutDemo" %>

<%@ Register Namespace="Ext.Net" Assembly="Ext.Net" TagPrefix="ext" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        var addTab = function (tabPanel, id, url, menuItem, title) {
            
            var tab = tabPanel.getComponent(id);
            if (!tab) {
                tab = tabPanel.add({
                    id: id,
                    title: title,
                    closable: true,
                    menuItem: menuItem,
                    loader: {
                        url: url,
                        renderer: "frame",
                        loadMask: {
                            showMask: true,
                            msg: "Loading " + url + "..."
                        }
                    }
                });

            }

            tabPanel.setActiveTab(tab);
        }
    </script>
    <asp:ContentPlaceHolder ID="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <ext:ResourceManager ID="resourceManager" runat="server">
        </ext:ResourceManager>
        <ext:Viewport ID="Viewport1" runat="server" Layout="BorderLayout" IDMode="Explicit"
            IsDynamic="False" Namespace="App" RenderXType="True">
            <Items>
                <ext:Panel ID="pnlWest" Region="West" Width="200" Collapsible="true" runat="server"
                    Title="MenuPanel">
                    <Items>
                        <ext:MenuPanel ID="mnuPanel" runat="server" Title="MenuPanel">
                            <Menu runat="server" ID="adminMenu">
                                <Items>
                                    <ext:MenuItem ID="miViewResults" runat="server" Text="View Result">
                                        <Listeners>
                                            <Click Handler="addTab(#{TabPanel1},'idmiViewResults','Result.aspx',this,'Results')">
                                            </Click>
                                        </Listeners>
                                    </ext:MenuItem>
                                </Items>
                            </Menu>
                        </ext:MenuPanel>
                    </Items>
                </ext:Panel>
                <ext:TabPanel ID="TabPanel1" runat="server" Region="Center">
                    <Items>
                        <ext:Panel runat="server" Title="Sample" ID="panelHome">
                            <Items>
                            </Items>
                        </ext:Panel>
                    </Items>
                </ext:TabPanel>
            </Items>
        </ext:Viewport>
        <asp:ContentPlaceHolder ID="CPH" runat="server">
        </asp:ContentPlaceHolder>
    </div>
    </form>
</body>
</html>
=========================
Home Page code to view in browser
=========================
<%@ Page Title="" Language="C#" MasterPageFile="~/LayoutDemo.Master" AutoEventWireup="true" CodeBehind="Home.aspx.cs" Inherits="MasterLayout.Home" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="CPH" runat="server">
</asp:Content>

=======================
Result page Code
=======================

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Result.aspx.cs" Inherits="MasterLayout.Result" %>

<%@ Register Namespace="Ext.Net" Assembly="Ext.Net" TagPrefix="ext" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <ext:FormPanel ID="fpResults" runat="server" Layout="BorderLayout">
        <Items>
            <ext:Panel ID="pnlEast" runat="server" Width="300" Region="East" Collapsible="true">
                <Content>
                    <table>
                        <tr>
                            <td>
                                List of records in gridpanel
                            </td>
                        </tr>
                    </table>
                </Content>
            </ext:Panel>
            <ext:Panel ID="pnlCenter" runat="server" Region="Center" >
                <Content>
                    <table>
                        <tr>
                            <td>
                                Data to save
                            </td>
                        </tr>
                    </table>
                </Content>
            </ext:Panel>
        </Items>
    </ext:FormPanel>
    </form>
</body>
</html>
==============================

When I clicked on menuItem then the Result.aspx page is added to the tabpanel.
In Result.aspx I have used Formpanel with border layout and defined two regions.
Here my question is I am unable to view the design properly
I don't want to use height property to controls(Height=600 for formpanel)
I want to use layout's to fit the design to all the browsers.
Any solution is helpful

Thanks
Nagamalli