Hi. Thank you for your reply. I have downloaded the files and I have them saved in an images folder as described in the steps. The final code on p.269 is the one not working with me.
The code on p.265 finally worked with me in the Internet Explorer and Firefox browsers, but not Google Chrome. Google chrome is the browser I use the most. I had to download the other browsers to check my code and that's how I figured out the problem. In Google Chrome, javascript is enabled.
The code on p.269 is not working in none of the browsers I have. It only shows the buttons and paragraph, but the buttons do not react when clicked nor they change color anymore like they supposed to.
Thank you again for taking your time to reply.