keynav.js

// jQuery arrow keys + escape key + enter key

$(document).keydown(function(e) {
    switch(e.which) {
        case 13: // enter
        break;

        case 27: // escape
        break;

        case 37: // left
        break;

        case 38: // up
        break;

        case 39: // right
        break;

        case 40: // down
        break;

        default: return; // exit this handler for other keys
    }
    e.preventDefault(); // prevent the default action (scroll / move caret)
});