关于拖动的问题

Question

http://jkisjk.vip.sina.com/html/MoveTableWithMouse.htm

Answer 1

<div id=MoveDiv style=position:absolute;left:200;top:50;width:100;height:300;background:blue>
<div style=position:absolute;left:0;top:0;width:100;height:20;background:red onmousedown=MDown(MoveDiv)>
按这里移动
</div>
</div><script>
var Obj=''
document.onmouseup=MUp
document.onmousemove=MMovefunction MDown(Object){
Obj=Object.id
document.all(Obj).setCapture()
pX=event.x-document.all(Obj).style.pixelLeft;
pY=event.y-document.all(Obj).style.pixelTop;
}function MMove(){
if(Obj!=''){
document.all(Obj).style.left=event.x-pX;
document.all(Obj).style.top=event.y-pY;
}
}function MUp(){
if(Obj!=''){
document.all(Obj).releaseCapture();
Obj='';
}
}
</script>