//使用div时，请保证colee_left2与colee_left1是在同一行上.
var speed=30//速度数值越大速度越慢
var colee_left2=document.getelementbyid("colee_left2");
var colee_left1=document.getelementbyid("colee_left1");
var colee_left=document.getelementbyid("colee_left");
colee_left2.innerhtml=colee_left1.innerhtml
function marquee3(){
if(colee_left2.offsetwidth-colee_left.scrollleft<=0)//offsetwidth 是对象的可见宽度
colee_left.scrollleft-=colee_left1.offsetwidth//scrollwidth 是对象的实际内容的宽，不包边线宽度
else{
colee_left.scrollleft++
}
}
var mymar3=setinterval(marquee3,speed)
colee_left.onmouseover=function() {clearinterval(mymar3)}
colee_left.onmouseout=function() {mymar3=setinterval(marquee3,speed)}