// JavaScript Document
var pause=false;   
var scrollTimeId=null;   
var container=null;   
var lineHeight=null;   
var speed=0;   
var delay=0;   
simpleScroll=function(container1,lineHeight1,speed1,delay1){   
    container=document.getElementById(container1);   
    lineHeight=lineHeight1;   
    speed=speed1;   
    delay=delay1;   
    //滚动效果   
    scrollexc=function(){   
        if(pause) return ;   
        container.scrollTop+=2;   
        var lh=lineHeight||container.getElementsByTagName('li')[0].offsetHeight;   
        if(container.scrollTop%lh<=1){   
            clearInterval(scrollTimeId);   
            fire();   
            container.scrollTop=0;   
            setTimeout(start,delay*2000);   
        }   
    };   
    //开始滚动   
    start=function(){   
        var lh=lineHeight||container.getElementsByTagName('li')[0].offsetHeight;   
            if (container.scrollHeight - container.offsetHeight >= lh)   
                scrollTimeId = setInterval(scrollexc, speed);   
    };   
    //把子节点树中的第一个移动到最后   
    fire=function(){   
        container.appendChild(container.getElementsByTagName('li')[0]);   
    };   
    container.onmouseover=function(){pause=true;};   
    container.onmouseout=function(){pause=false;};   
    setTimeout(start,delay*2000);   
};