Application.spark

<link href="~/Content/Site.css" type="text/css" rel="stylesheet" />
<script src="~/Scripts/jquery-1.4.1.js" type="text/javascript" language="javascript" />

Bindings.xml

<?xml version="1.0" encoding="utf-8" ?> 
<bindings>
  <element name="Greetings">"Hello from binding!"</element>
  <element name="link">
    HtmlHelper.RenderLinkImport('@href', '@type', '@rel')
  </element>
  <element name="script">
    HtmlHelper.RenderScriptImport('@src', '@type', '@language')
  </element>
</bindings>

HtmlExtensions.cs

        private static readonly string _version;
        static ViewExtensions()
        {
            var version = Assembly.GetExecutingAssembly().GetName().Version;
            _version = "{0}{1}{2}{3}".ToFormat(version.Major, version.MajorRevision, version.Minor, version.MinorRevision);
        }

        public static string RenderLinkImport(this HtmlHelper helper, string href, string type, string rel)
        {
            return @"<link href=""{0}?v={1}"" type=""{2}"" rel=""{3}"" />".ToFormat(href, _version, type, rel);
        }


        public static string RenderScriptImport(this HtmlHelper helper, string src, string type, string language)
        {
#if !DEBUG
            if(src.EndsWith(".js"))
                src = src.Insert(src.IndexOf(".js"), ".min");
#endif
            return @"<link src=""{0}?v={1}"" type=""{2}"" language=""{3}"" />".ToFormat(src, _version, type, language);
        }