Hide CSS files of Fiddler tracif

CustomeRule.js

// Open Fiddler and Choose "Rules" menu, click "Customize Rules..." and add this code to CustomRule.js

class Handlers
{
    // ....
    public static RulesOption("Hide CSS")
    BindPref("fiddlerscript.rules.HideCSS")
    var m_HideCSS: boolean = false;
    // ....
    static function OnBeforeResponse(oSession: Session) {
        // ....
        if (m_HideCSS && oSession.oResponse.headers.ExistsAndContains("Content-Type", "text/css") )
		    {
            oSession["ui-hide"] = "true";
        }
	    	// ....
    }
}

And for JavaScript files:

class Handlers
{
    // ....
    public static RulesOption("Hide JavaScript")
    BindPref("fiddlerscript.rules.HideJS")
    var m_HideJS: boolean = false;
    // ....
    static function OnBeforeResponse(oSession: Session) {
        // ....
        if (m_HideJS && (oSession.oResponse.headers.ExistsAndContains("Content-Type", "text/javascript") || oSession.oResponse.headers.ExistsAndContains("Content-Type", "application/x-javascript") || oSession.oResponse.headers.ExistsAndContains("Content-Type", "application/javascript")))
        {
            oSession["ui-hide"] = "true";
        }
            // ....
    }
}

Great additions!
Both should be integrated into default Fiddler install ...

You may also want to exclude ajax when filtering JS:

        if (m_HideJS && !oSession.oRequest.headers.ExistsAndContains("X-Requested-With", "XMLHttpRequest") && (oSession.oResponse.headers.ExistsAndContains("Content-Type", "text/javascript") || oSession.oResponse.headers.ExistsAndContains("Content-Type", "application/x-javascript") || oSession.oResponse.headers.ExistsAndContains("Content-Type", "application/javascript")))
        {
            oSession["ui-hide"] = "true";
        }

maybe also add filter for .js file extensions since some websites may include static js files with ajax

How can I hide the 304 ?
I use the Hide 304s and Hide Not Modified(304) not work.