When using Opera, you are not required to view page source with the browser's built-in viewer. You are given the ability to change the default application for viewing code.
To change this application, first click on Tools in the Opera menu which is located at the top of your browser window. When the drop-down menu appears, click on Preferences... Please note that you can use the following keyboard shortcut in lieu of clicking on the menu choice: Ctrl + F12
