You can define up to 20 browsers for previewing. Its a good idea to preview in the following browsers: Internet Explorer 6.0, Netscape Navigator 7.0, and the Macintosh-only Safari browser. In addition to these more popular, graphical browsers, you may want to test your pages using a text-only browser such as Lynx.
The Preferences dialog box appears with the Preview in Browser options.
For more information, see Setting the Preview in Browser Preferences options.