var url  =  uri.spec ? uri.spec : uri; 
var url  = (uri instanceof nsIURI) ? uri.spec : uri.toString(); 
    isURIAllowed: function(uri)    {        if (!uri)  // null or undefined is denied            return false;        var url  =  uri.spec ? uri.spec : uri;        if (FBL.isLocalURL(url) && !this.disabledFile)            return true;        if (isSystemURL(url) && Firebug.allowSystemPages)            return true;        if (uri.spec)        {               if (pm.testPermission(uri, "firebug") == ALLOW_ACTION)                return true;        }        return false;    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/5da1c8b018cf62f6e1c25d1879f31f9fb68401bb/firebug.js/buggy/extension/content/firebug/firebug.js