var stopscroll = false;

//设置对象属性 
obj.style.height = infoHeight + "px";
obj.style.overflowX = "visible";
obj.style.overflowY = "hidden";
obj.noWrap = true;
obj.onmouseover = new Function("stopscroll=true");
obj.onmouseout = new Function("stopscroll=false");
var preTop = 0;
var currentTop = infoHeight;
var stoptime = 0;
obj.innerHTML += obj.innerHTML;
//初始化，开始滚动 
function init_srollinfo() {
    obj.scrollTop = 0;
    setInterval("scrollUp()", 1);
}
//滚动函数 
function scrollUp() {
    if (stopscroll == true) return;
    currentTop += 1;
    if (currentTop == infoHeight + 1) {
        stoptime += 1;
        currentTop -= 1;
        if (stoptime == timedelay) {
            currentTop = 0;
            stoptime = 0;
        }
    }
    else {
        preTop = obj.scrollTop;

        obj.scrollTop += 1;

        if (preTop == obj.scrollTop) {
            obj.scrollTop = infoHeight;
            obj.scrollTop += 1;
        }
    }
}
init_srollinfo();