diff --git a/js/main.js b/js/main.js index 556e4ed8cf..98c219d78c 100644 --- a/js/main.js +++ b/js/main.js @@ -322,6 +322,29 @@ } }); + $(document).keydown(function (event) { + var threads = $('.thread_level_1'); + if ((event.keyCode === 74 || event.keyCode === 75) && !$(event.target).is('textarea, input')) { + var scrollTop = $(window).scrollTop(); + if (event.keyCode === 75) { + threads = $(threads.get().reverse()); + } + threads.each(function(key, item) { + var comparison; + var top = $(item).offset().top - 100; + if (event.keyCode === 74) { + comparison = top > scrollTop + 1; + } else if (event.keyCode === 75) { + comparison = top < scrollTop - 1; + } + if (comparison) { + $('html, body').animate({ scrollTop: top }, 200); + return false; + } + }); + } + }); + // Set an event listener for infinite scroll if(typeof infinite_scroll !== 'undefined') { $(window).scroll(function(e){