js实现文字横向滚动

页面布局

     <div id="scroll_div" class="fl">         <div id="scroll_begin">            恭喜793765***获得 <span class="pad_right">50元巨人点卡奖励</span>            恭喜793765***获得 <span class="pad_right">50元巨人点卡奖励</span>            恭喜793765***获得 <span class="pad_right">50元巨人点卡奖励</span>            恭喜793765***获得 <span class="pad_right">50元巨人点卡奖励</span>            恭喜793765***获得 <span class="pad_right">50元巨人点卡奖励</span>            恭喜793765***获得 <span class="pad_right">50元巨人点卡奖励</span>            恭喜793765***获得 <span class="pad_right">50元巨人点卡奖励</span>        </div>         <div id="scroll_end"></div>    </div> 

样式：.pad_right{ padding-right:2em;}#scroll_div {height:26px;overflow: hidden;white-space: nowrap;width:535px;margin-left:10px;}#scroll_begin,#scroll_end {display: inline;}

js代码：

//文字横向滚动
function ScrollImgLeft(){
    var speed=50;
        var MyMar = null;
    var scroll_begin = document.getElementById("scroll_begin");
    var scroll_end = document.getElementById("scroll_end");
    var scroll_div = document.getElementById("scroll_div");
    scroll_end.innerHTML=scroll_begin.innerHTML;
    function Marquee(){
        if(scroll_end.offsetWidth-scroll_div.scrollLeft<=0)
            scroll_div.scrollLeft-=scroll_begin.offsetWidth;
        else
            scroll_div.scrollLeft++;
        }
        MyMar=setInterval(Marquee,speed);
        scroll_div.onmouseover = function(){　　　　　　　clearInterval(MyMar);　　　　　} 　　　　scroll_div.onmouseout = function(){　　　　　　　MyMar = setInterval(Marquee,speed);  　　　　　　　　　}  
}ScrollImgLeft();