You can do something like this.
<html lang="en-us">
<head>
<title>@ViewBag.Title</title>
<link href="http://code.jquery.com/mobile/1.0a3/jquery.mobile-1.0a3.min.css" rel="stylesheet" type="text/css" />
<link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
<script src="@Url.Content("~/Scripts/jquery-1.5.min.js")" type="text/javascript"></script>
<script language="javascript" type="text/javascript">
$(document).bind("mobileinit", function () {
$.mobile.ajaxFormsEnabled = @ViewBag.EnableAjax;
});
</script>
<script src="http://code.jquery.com/mobile/1.0a3/jquery.mobile-1.0a3.min.js" type="text/javascript"></script>
</head>
<body>
<div data-role="page" data-cache="never">
<div data-role="header">
<h1>@ViewBag.HeaderString</h1>
</div>
<div data-role="content">
@RenderBody()
</div>
<div data-role="footer">
<h1>HTDE</h1>
</div>
</div>
</body>
</html>