For Sitecore 6.5

browser_configuration_reference.pdf

Page Editor

Mac OS X 

Safari - No configuration changes necessary.

Windows

Firefox - latest version, with these additional steps:

Add SPU to trusted sites

1. Open the options menu
   1. 
   2. 
2. Content tab, Exceptions
   1. 
3. Add "*.spu.edu" to the allowed sites
   1. 

Prevent Mozilla Firefox from Showing Confirmation Dialog Box in the Page Editor

In the Page Editor, Mozilla Firefox may show the Prevent this page from creating additional dialogs
confirmation dialog box if you open modal dialogs too often. To prevent Mozilla Firefox from showing
this confirmation dialog box:

1.  In the browser address bar, enter about:config.
2.  Right-click on the preferences area and click New, Integer.
3.  In the New Integer Value dialog box, enter "dom.successive_dialog_time_limit" and click Ok. 
4. In the Enter Integer Value dialog box, enter 0 and click OK
   

Content Editor

Windows - Internet Explorer 9 or 10. 10 should be in compatibility mode. Firefox (latest version) works as well.