Month: February 2013

I am working on building some 508 Compliant/Accessible web sites and am testing out how well the navigation works using only the tab key.

Under Mac OS X with Firefox, Opera, and Safari, by default, the tab key does not cycle through all of the links on a web page.

Firefox:

• Go to: System Preferences/Keyboard/Keyboard Shortcuts
• Click on the ‘All controls’ radio button towards the bottom of the dialog under the text that says: ‘Full Keyboard Access: In windows and dialogs, press Tab to move keyboard focus between:’

Safari:

• Enabling the aforementioned setting does not do it for Safari
• Go to: Safari/Preferences/Advanced
• Under ‘Accessibility:’ click on the checkbox next to ‘Press Tab to highlight each item on a a wepage’

Opera:

• Go to: Opera/Preferences/Advanced
• Click on ‘Shortcuts’ in the left-hand nav of the dialog
• Select ‘Enable single-key shortcuts’
• Opera does not implement keyboard navigation the way most other browsers do.  To step through the links on a page, press the ‘Q’ key to go forward, and ‘A’ key to step backwards through the links on the page.  ‘W’ and ‘S’ keys you to navigate between headings <hn> tags.

Chrome:

• Go to: Chrome/Preferences
• Scroll all of the way down to the bottom of the settings page and click on ‘Show Advanced Settings’
• Scroll down to ‘Web Content’
• Check the box next to ‘Pressing Tab on a webpage highlights links, as well as form fields’

If you want to allow a popup from a file accessed via file:///home/rchapin/some_dir/somefile.html, open FireFox’s Preferences, click on the Content tab, and click on the ‘Exceptions’ button adjacent to the ‘Block pop-up windows’ check box.

Then enter ‘<file>’ in the ‘Address of website:’ field and click the ‘Allow’ button.

I am installing Eclipse on Mac OS X Mountain Lion.  Unpacking the
.tar.gz was no problem, however, when I went to run it for the first
time I got the following error message:

Your security preferences allow installation of only apps from the Mac App Store and identified developers

To add Eclipse to the list of ‘approved’ applications run the following command in a terminal:

xattr -d com.apple.quarantine /path/to/Eclipse.app