.mydiv {
background-color: #ff6;
border: 5px solid #f90;
text-align: center;
line-height: 40px;
font-size: 12px;
font-weight: bold;
z-index:99;
width: 300px;
height: 120px;
left:50%;
top: 50%;
margin-left:-150px!important;
margin-top:-60px!important;
margin-top:0px;
position:fixed!important;
position:absolute;
_top: expression(eval(document.compatMode &&
document.compatMode=='CSS1Compat') ?
documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :
document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);
}
.bg {
background-color: #ccc;
width: 100%;
height: 100%;
left:0;
top:0;
filter:alpha(opacity=10);
opacity:0.8;
z-index:1;
position:fixed!important;
position:absolute;
_top: expression(eval(document.compatMode &&
document.compatMode=='CSS1Compat') ?
documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :
document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);
}
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