add: return; 
context: function cmdGotoURL(e){    if (e.url.search(/^ircs?:/i) == 0)    {        gotoIRCURL(e.url);        return;    }    if (e.url.search(/^x-cz-command:/i) == 0)    {        var ary = e.url.match(/^x-cz-command:(.*)$/i);        e.sourceObject.frame.contentWindow.location = "javascript:void(view.dispatch('" +                                                      decodeURI(ary[1]) + "'))";        return;    }    if (e.command.name == "goto-url-newwin")    {        openTopWin(e.url);        return;    }    var window = getWindowByType("navigator:browser");    if (!window)    {        openTopWin(e.url);        return;    }    if (e.command.name == "goto-url-newtab")    {        window.openNewTabWith(e.url, false, false);        return;    }    var location = window.content.document.location;    if (location.href.indexOf("chrome://chatzilla/content/") == 0)    {        // don't replace chatzilla running in a tab        openTopWin(e.url);    }    location.href = e.url;}
meta: 1622	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1622/db984b2e4b1a9a4a1099a51bf1d5dba65979aaa9/commands.js/buggy/xul/content/commands.js