rem: innerCall(this.innerPanel, "initialize", [this.context.window]); 
add: if (this.innerPanel) innerCall(this.innerPanel, "initialize", [this.context.window]); 
context:     browserReady: function()    {        this.browser.removeEventListener("DOMContentLoaded", this.browserReady, false);        if (FBTrace.DBG_INITIALIZE) FBTrace.sysout("plugin.browserReady DOMContentLoaded addEventListener\n");         /*@explore*/        this.innerPanel = this.browser.contentWindow.FirebugPanel; // XXXjjb ?        if (this.visible)        {            innerCall(this.innerPanel, "initialize", [this.context.window]);            this.updateSelection(this.selection);        }    },
meta: 7450	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7450/57be5cc0d05af01592ebc9354c9dd14cffcbf7de/plugin.js/buggy/extension/content/firebug/plugin.js