var scrolling = null;
 
    function tsscroll_up() {
        var d = document.getElementById('toproll');
 
        d.scrollTop = d.scrollTop - 5;
 
        scrolling = window.setTimeout(function() {
            tsscroll_up();
        }, 100);
    }
 
    function tsscroll_down() {
        var d = document.getElementById('toproll');
 
        d.scrollTop = d.scrollTop + 5;
 
        scrolling = window.setTimeout(function() {
            tsscroll_down();
        }, 100);
    }
 
    function tsstop_scroll() {
        window.clearTimeout(scrolling);
    }