// JScript 文件

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);} 
    } 
}