Here is an example of how I display a map on the entire page:
<div id="map_canvas">
</div>
UPDATE 2: I have successfully displayed a menu on the map, but there is a problem. When I click on the button, the menu appears briefly and then disappears again. Additionally, the whole map refreshes, which is not the desired behavior.
<script type="text/javascript>
$(document).ready(function () {
$('#btnmenu').click(function () {
$('#menu').show();
}); });
</script>
<body style="margin:0px;padding:0px;">
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<div id="map_canvas">
</div>
<div>
<asp:Button ID="btnmenu" runat="server" Text="Menu" />
</div>
<div class="tabsleft" id="menu" style="display:none">
<ul>
<li>
<a><img class="imga" alt="dashboard" src="images/eve.bmp" border="0" />DASHBOARD</a>
</li>
</ul>
</div>
</form>
</body>