.darkness {
display:none;
position:fixed;
_position:absolute; /* ie6*/
height:100%;
width:100%;
top:0;
left:0;
background:#000;
border:1px solid #cecece;
z-index:9998;
}

.main{
display:none;
position:fixed;
_position:absolute; /* ie6*/
height:253px;
width:537px;
top: 50%;
left: 50%;
margin: -126px 0 0 -268px;
background: url(../images/popup/bg.jpg) no-repeat;
z-index:9999;
}

#popup .btn {
	display: block; width: 120px; height: 28px;
	position: absolute; bottom: 26px;
	text-indent: -5000px; overflow: hidden;
	cursor: pointer;
}

#popup .yes {
	left: 247px;	 
	background: url(../images/popup/yes.jpg) no-repeat;
}

#popup .no {
	left: 387px;
	background: url(../images/popup/no.jpg) no-repeat;
}