title: Use arrow keys to change focus on buttons
body: <p><img src="https://i.stack.imgur.com/2hN0H.jpg" alt="UI Dialog"></p>
  
  <p>I am using the JQuery UI Dialog to create a pop-up. The pop-up has two buttons. The first button is automaticly selected by JQuery. I can change the selection between the buttons and the exit button with 'tab'.</p>
  
  <p>I want to change the selection (only between the two buttons) also with the left and right arrow keys on the keyboard.</p>
  
  <p>Where do I have to catch the arrow key down events and how can I change the focus of the buttons?</p>
  
  <p>Thanks for your help!</p>