JS与CSS结合实现DIV显示/隐藏透明层

#massage_box{ position:absolute; left:expression((body.clientWidth-massage_box.offsetWidth)/2); top:expression((body.clientHeight-300)/2); width:620px; height:400px;z-index:2; visibility:hidden} #mask{ position:absolute; top:0; left:0; width:expression(body.scrollWidth); height:expression(body.scrollHeight); background:#000000; filter:ALPHA(opacity=65); z-index:1; visibility:hidden; margin:auto} .massage{width:100%; height:100%; color:#036; font-size:12px; line-height:150%}

var Obj=''

document.οnmοuseup=MUp

document.οnmοusemοve=MMove

function 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='';

}

}

function sc1(){

document.getElementById("massage_box").style.top=document.body.scrollTop+(document.body.clientHeight-document.getElementById("massage_box").offsetHeight)/2

document.getElementById("massage_box").style.left=document.body.scrollLeft+(document.body.clientWidth-document.getElementById("massage_box").offsetWidth)/2;

}

function scall(){

sc1();

}

window.οnscrοll=scall;

window.οnresize=scall;

window.οnlοad=scall;

response.Write("")

next %>

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