add: b.webNavigation.stop(b.webNavigation.STOP_ALL); 
context: function torbutton_allow_win_jsplugins(win, allowed) {    var browser = win.getBrowser();    browser.docShell.allowPlugins = allowed;    TagDocshellForJS(browser, allowed);    var browsers = browser.browsers;    for (var i = 0; i < browsers.length; ++i) {        var b = browser.browsers[i];        if (b) {            b.docShell.allowPlugins = allowed;            TagDocshellForJS(b, allowed);        }    }}
meta: 3444	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3444/6eb06242dc852a2fb22e7c2c565004d895833f1b/torbutton.js/clean/src/chrome/content/torbutton.js