#overlayerZ {
width:391px;
height:326px;
z-index:100;
position:absolute;
top:500px;
left:50%;
margin-left:-250px;
display:block;
}

.contentZ {
width:391px;
height:326px;
background-color:#006699;
position:relative;
}

.x {
width:90px;
height:20px;
position:absolute;
top:0;
right:0;
cursor:pointer;z-index:100;oevrflow:hidden;
}

.ima {
width:391px;
height:326px;
position:absolute;
top:0;
left:0;
border:none;
 z-index:1;
 background:url(banner_google.jpg) top center no-repeat;
}

.ima2 {
width:391px;
height:326px;
position:absolute;
top:0;
left:0;
border:none;
 z-index:1;
 background:url(banner_google_EUA.jpg) top center no-repeat;
}