JavaScript实现动态移动层及拖动浮层关闭的方法

<html>
<head>
<title>动态移动的层</title>
<body bgcolor="#ADBAC9">
<div id="div1" class="yellow" style="VISIBILITY:visible ; 
background-color:#FFFF00; 
position: absolute; top: 60; left: 200;
width: 360; height: 250;
filter: revealTrans(transition=12, 'duration=0.1) 
blendTrans(duration=0.1) ">
<div id=title onmousedown=DIVDown("div1") 
style="background-color:#30608F;padding:2px; 
font-size:13px;text-indent:5;
color:#FFFFFF;cursor:move">标题</div>
<img id=close onclick=Hide(div1)
style="position: absolute; right: 2; top: 2" border="0"
src="close.gif" width="15" height="15">
</div>
<script language="JavaScript">
var Obj="none";
var pX
var pY
document.onmousemove=DIVMove;
document.onmouseup=DIVUp;
function DIVDown(tag){
Obj=tag;
pX=parseInt(document.all(Obj).style.left)-event.x;
pY=parseInt(document.all(Obj).style.top)-event.y;
}
function DIVMove(){
if(Obj!="none"){
document.all(Obj).style.left=pX+event.x;
document.all(Obj).style.top=pY+event.y;
event.returnValue=false;
}
}
function DIVUp(){Obj="none";}
function Hide(divid){
divid.filters.revealTrans.apply();
divid.style.visibility = "hidden";
divid.filters.revealTrans.play();
}
</script>
</body>
</html>