I have following aspx page called search.aspx:
<div id="wrap">
<div id="menu">
<div id="t_menus" runat="server">
<div id="left">
<div class="Menu_Top">
</div>
<div id="a">
</div>
<div class="MenuBtm">
</div>
</div>
<div id="bottom_menu">
<div class="MenuTop">
</div>
<div id="bottommenu">
</div>
<div class="MenuBtm">
</div>
</div>
</div>
</div>
<div id="column_two">
<div id="right_top" class="right_top">
<asp:Panel ID="SrchPanel" runat="server" EnableViewState="False" Wrap="False">
<div id="logo">
<asp:ImageButton ID="logo" runat="server" ImageUrl="/images/l.gif" />
</div>
<div id="SrchDivMid">
<asp:textbox id="txtS" runat="server" MaxLength="50" value="Search"></asp:textbox>
<asp:button id="btnFind" runat="server" Text="Find" />
</div>
<div id="returnInfocenter">
<asp:HyperLink ID="return" runat="server" Text="Return"></asp:HyperLink>
</div>
</asp:Panel>
</div>
</div>
<div class="contentCont">
<div id="content">
<iframe id="iFrame" name="iframe" marginwidth="0" marginheight="0" frameborder="0" scrolling="auto" src=""></iframe>
</div>
</div>
</div>
What it does is create simple google type layout like this image using css:

I want this to show like this… when user clicks on menu it loads up iframe with data. I want the css logo searchbox and return button come up and dotted line removed like this image:

I am trying few different things but its not working out. Can anyone please just guide me what approch should i take to achieve the result?
It will be tricky when user click on menu item, page layout change from style 1 to style 2 mentioned in photos.
Initially You need three main div elements
When menu item clicked all you need to transform div structure like this
Similar Shifting Require In Between Search Section e.g in start div structure look like
When menu clicked, shift style of these divs like
You can create classes and when menu item clicked, replace one class with another to shift style of page layout.
Its general concept, rest require step by step tuning.