<html> <head> <script src="inspector-wrappers-test-utils.js"></script> <script> window.alert = function(consolePanel) { var _addMessage = consolePanel.addMessage; consolePanel.addMessage = function() { doAttack(consolePanel.addMessage); consolePanel.addMessage = _addMessage; } } </script> </head> <body> <script>instructions({console: true, trigger: "alert(this)"});</script> </body> </html>