Mouseovers should be activated using keyboard?

1. How do I make my element keyboard accessible?
2. How can we make any UI element on a Web page keyboard non focusable?

How do I make my element keyboard accessible?

An element is clickable if it has an onclick event handler defined. You can make it focusable by adding a tabindex=0 attribute value to it. You can make it operable with the keyboard by defining an onkeydown event handler; in most cases, the action taken by event handler should be the same for both types of events.

How can we make any UI element on a Web page keyboard non focusable?

In order to make an prevent an element from taking focus ("non-focusable"), you need to use Javascript to watch for the focus and prevent the default interaction. In order to prevent an element from being tabbed to, use tabindex=-1 attribute. Adding tabindex=-1 will make any element focusable, even div elements.