具体的实例代码如下：

// 自动滚动
function boxmove(d1,d2,d3,e,obj){
 var speed=30;
 var demo=document.getElementById(d1);
 var demo1=document.getElementById(d2);
 var demo2=document.getElementById(d3);
 demo2.innerHTML=demo1.innerHTML;
 function boxTop(){
 if(demo2.offsetTop-demo.scrollTop<=0){demo.scrollTop-=demo1.offsetHeight}
 else{demo.scrollTop++}
 }
 function boxRight(){
 if(demo.scrollLeft<=0){demo.scrollLeft+=demo2.offsetWidth}
 else{demo.scrollLeft--}
 }
 function boxBottom(){
 if(demo1.offsetTop-demo.scrollTop>=0){demo.scrollTop+=demo2.offsetHeight}
 else{demo.scrollTop--}
 }
 function boxLeft(){
 if(demo2.offsetWidth-demo.scrollLeft<=0){demo.scrollLeft-=demo1.offsetWidth}
 else{demo.scrollLeft++}
 }
 if(e==1){
 var MoveTop=setInterval(boxTop,speed);
 demo.onmouseover=function(){clearInterval(MoveTop);}
 demo.onmouseout=function(){MoveTop=setInterval(boxTop,speed)}
 }
 if(e==2){
 var MoveRight=setInterval(boxRight,speed);
 demo.onmouseover=function(){clearInterval(MoveRight)}
 demo.onmouseout=function(){MoveRight=setInterval(boxRight,speed)}
 }
 if(e==3){
 var MoveBottom=setInterval(boxBottom,speed);
 demo.onmouseover=function(){clearInterval(MoveBottom);}
 demo.onmouseout=function(){MoveBottom=setInterval(boxBottom,speed)}
 }
 if(e==4){
 var MoveLeft=setInterval(boxLeft,speed)
 demo.onmouseover=function(){clearInterval(MoveLeft)}
 demo.onmouseout=function(){MoveLeft=setInterval(boxLeft,speed)}
 }
 if(e=="top"){
 MoveTop=setInterval(boxTop,speed)
 obj.onmouseout=function(){clearInterval(MoveTop);}
 }
 if(e=="right"){
 MoveRight=setInterval(boxRight,speed)
 obj.onmouseout=function(){clearInterval(MoveRight);}
 }
 if(e=="bottom"){
 MoveBottom=setInterval(boxBottom,speed)
 obj.onmouseout=function(){clearInterval(MoveBottom);}
 }
 if(e=="left"){
 MoveLeft=setInterval(boxLeft,speed)
 obj.onmouseout=function(){clearInterval(MoveLeft);}
 }
 }




滚动合集

向上














boxmove("a","a1","a2",1);

向右














boxmove("b","b1","b2",2);

向下














boxmove("c","c1","c2",3);

向左