add: cwin.changeCSS(frame.source.getFontCSS("data"), "cz-fonts"); 
context: function client_statechange (webProgress, request, stateFlags, status){    const nsIWebProgressListener = Components.interfaces.nsIWebProgressListener;    const START = nsIWebProgressListener.STATE_START;    const STOP = nsIWebProgressListener.STATE_STOP;    var frame;    if (stateFlags & START)    {        frame = getFrameForDOMWindow(webProgress.DOMWindow);        if (!frame)        {            dd("can't find frame for window")            webProgress.removeProgressListener(this);            return;        }    }    else if (stateFlags == 786448)    {        frame = getFrameForDOMWindow(webProgress.DOMWindow);        if (!frame)        {            dd("can't find frame for window");            webProgress.removeProgressListener(this);            return;        }        var cwin = getContentWindow(frame);        if (cwin && "initOutputWindow" in cwin)        {            cwin.getMsg = getMsg;            cwin.initOutputWindow(client, frame.source, onMessageViewClick);            cwin.changeCSS(frame.source.getTimestampCSS("data"),                            "cz-timestamp-format");            scrollDown(frame, true);            webProgress.removeProgressListener(this);        }    }}
meta: 1622	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1622/ea0826429d303dfc357abf2ce4f2bc3670d720ae/static.js/clean/xul/content/static.js