#cover
{
display:none;
position:absolute;
left:0px;
top:0px;
width:100%;
height:100%;
background:#000000;
filter:alpha(Opacity=50);
opacity:0.5;
-moz-opacity:0.5;
-khtml-opacity:0.5;
}

#dialog
{
display:none;
left:700px;
top:140px;
width:260px;
height:250px;
position:absolute;
z-index:500;
background:#FFFFFF;
}