jQuery(document).keydown(function(e){
	if (e.which == 37) { // 37 is the left arrow key code.
		window.location.href = 'http://www.url.com';
	};
	if (e.which == 39) { // 39 is the right arrow key code.
		window.location.href = 'http://www.url.com';
	};
});

This is just a basic example of how you would allow navigation via left/right arrow keys. This is most commonly used when navigating multiple-image image galleries.

Navigate Pages Using the Left/Right Keyboard Arrows

navigation, jquery

jQuery