#opic1, #opic2 {
position:absolute;
left:0px;
top:0px;
width:517px;
height:241px;
background-color:#FFFFFF;
border:0;
cursor:pointer
}


#opic1{opacity:0.9}
#opic2{opacity:0}



#opic1{filter:alpha(opacity=100)}
#opic2{filter:alpha(opacity=0)}