How do I collapse/expand my menu using only the keyboard. The enter key doesn't work.
I have a vertical left hand menu created using ul/li tags. I need this to be accessible via the keyboard only. On Chrome and IE the enter key will expand or collapse the sub menu items. On Firefox it doesn't. How do I fix this issue?
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As far as I know, this isn't a standard behavior of lists, you probably have both custom CSS and JavaScript to make it work.
Is there an example of your menu online for testing/experimenting?
Is it the computer, or just Firefox?
Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites. Is the problem still there?
Starting The Computer In Safe Mode;
Free Online Encyclopedia
Perform a System File Check to fix corrupted system files Win 7, 8, Vista: https://support.microsoft.com/en-us/kb/929833
Look for the "On Screen Keyboard" in your Windows.
Make sure the mouse drivers are up-to-date. And active.