Badlink page & javascript not working in Enterprise browser app


we have the following problem with the retry and back buttons in the badlink page, this buttons not working and we also added a button to close the enterprise browser, this button execute code javascript: window.close() and also not working.
Another problem we have is that does not load a custom logo image in gif format.
our model is MC9190, the enterprise browser version is
regards, thaks in advance