heitu.pl

   function leftArrowPressed() {
      alert("leftArrowPressed" );
      window.location = prevUrl
    }

    function rightArrowPressed() {
      alert("rightArrowPressed" );
      window.location = nextUrl
    }
    function topArrowPressed() {
      alert("topArrowPressed" );
      window.location = prevUrl
    }

    function downArrowPressed() {
      alert("downArrowPressed" );
      window.location = nextUrl
    }

        document.onkeydown = function(evt) {
                        var nextPage = $("#next_page_link")
                        var prevPage = $("#previous_page_link")
                        nextUrl = nextPage.attr("href")
                        prevUrl = prevPage.attr("href")
        evt = evt || window.event;
        switch (evt.keyCode) {
                case 37:
                leftArrowPressed(nextUrl);
                break;

                case 38:
                topArrowPressed(nextUrl);
                break;

                 case 39:
                rightArrowPressed(prevUrl);
                break;

                case 40:
                downArrowPressed(prevUrl);
                break;

        }
    };