1 //左右不断循环滚动  2 var splep=30;  3 demo2.innerHTML=demo1.innerHTML;  4 var _left = demo1.offsetWidth;  5 var mymarq=setInterval(marquee,splep);  6 demo.οnmοuseοver=function(){ clearInterval(mymarq);}  7 demo.οnmοuseοut=function(){ mymarq=setInterval(marquee,splep);}  8 function marquee(){
    9     if((_left - demo.scrollLeft) <= 0){
   10         demo.scrollLeft = 0; 11     }else{
   12         ++demo.scrollLeft; 13     } 14 }