Flash compatibility with all browser
Basics browser functionalities such as the “Back” button, printing and bookmarking are impossible to use with 100% Flash-based sites.
100% Flash websites should get along with all browser functionalities
For many users, the appeal of a Flash site was often halted because they lacked existing functionalities. For example, the “Back” button brought the user back to the last HTML page viewed, there was no such thing as printable Flash pages and it was impossible to bookmark a page. Clients are especially wary of Flash for these reasons.
Back button
Ensuring your Flash site supports browser functionalities depends on the site’s structure. Again, providing primary content in an HTML format allows you to link each page in the site back to the Flash movie. To fill the browser history, each time you move within the Flash you call on an HTML page that will redirect the Flash, thus creating a history log and enabling the user to use the “Back” button of the browser.
Print functionalities
Even if you develop some fancy print function within your Flash files, it’s always good practice to have content inside your HTML page. Otherwise when the user clicks the “Print” button, only a blank page will appear. Browsers do not print content displayed within Flash objects. The SWFObject allowing the alternate content to be displayed enables the print functionality.