var stopscroll = false;

var scrollElem = document.getElementById("andyscroll");
var marqueesHeight = scrollElem.style.height;
scrollElem.onmouseover = new Function('stopscroll = true');
scrollElem.onmouseout = new Function('stopscroll = false');
var preTop = 0;


var currentTop = 0;
var stoptime = 0;
var leftElem = document.getElementById("scrollmessage");
scrollElem.appendChild(leftElem.cloneNode(true));


function scrollUp() {
        if (stopscroll) return;
        currentTop += 1; 
        if (currentTop == 152) {
            stoptime += 1;
            currentTop -= 1;
            if (stoptime == 180) {
                currentTop = 0;
                stoptime = 0;
            }
        } else {
            preTop = scrollElem.scrollTop;
            scrollElem.scrollTop += 1;
            if (preTop == scrollElem.scrollTop) {
                scrollElem.scrollTop = 0;
                scrollElem.scrollTop += 1;
        }
    }
}


function a(){
    scrollElem.scrollTop = 0;
    setInterval('scrollUp()', 15); 
}
a();