移动层代码

var Obj=null; document.onmouseup=MUp document.onmousemove=MMove function MDown(Object){ Obj=Object.parentNode; Obj.setCapture() pX=event.x-Obj.style.pixelLeft; pY=event.y-Obj.style.pixelTop; } function MMove(){ if(Obj!=null){ Obj.style.left=event.x-pX; Obj.style.top=event.y-pY; } } function MUp(){ if(Obj!=null){ Obj.releaseCapture(); Obj=null; } }