toleft("demoa1","demob1","democ1",25,"hehe121")
//调用向右滚动

function $(id){return document.getElementById(id)}
//向左滚动函数，demo包含demo1与demo2,speed是滚动速度，flag一个网页内有多个时设置为不同的任意字符。
function toleft(demoa1,demob1,democ1,speed,flag){
demoa1=$(demoa1);demob1=$(demob1);democ1=$(democ1)
democ1.innerHTML=demob1.innerHTML
function Marquee(){
if(democ1.offsetWidth-demoa1.scrollLeft<=0){
demoa1.scrollLeft-=demob1.offsetWidth
}
else{
demoa1.scrollLeft++
}
}
flag=setInterval(Marquee,speed)
demoa1.onmouseover=function(){clearInterval(flag);}
demoa1.onmouseout=function(){flag=setInterval(Marquee,speed);}
}
//向右滚动函数，demo包含demo1与demo2,speed是滚动速度，flag一个网页内有多个时设置为不同的任意字符。