function keyboardNav(url, key) {
	if (!url) {
		return;
	}

	$(document).keydown(function(event) {
		if (event.keyCode == key && event.ctrlKey) {
			window.location.href = url;
		}
	});
}

keyboardNav.keys = {
	right: 39,
	left: 37
}

$(function() {
  keyboardNav($('#nav__prevPage').attr('href'), keyboardNav.keys.left);
  keyboardNav($('#nav__nextPage').attr('href'), keyboardNav.keys.right);
});