#pg-cpa {               
    height: 0; 
    position: absolute; 
    right: 0; 
    top: 0;
    width: 0;           
    z-index: 102;
}

#pg-cpa img {
    bottom: 0;
    width: 100%; 
    height: 100%;
    border: none;
    left: 0;
    position: absolute;
}

#pg-cpa-after {
    background: top right no-repeat url(../image/after.jpg); 
    position: absolute; 
    right: 0px; top: 0px;
    width: 0px; 
    height: 0px; 
    z-index: 100;
}

#pg-cpa-before {
    background: top right no-repeat url(../image/before.jpg); 
    position: absolute; 
    right: 0px; 
    top:0px;
    width: 0px; 
    height: 0px; 
    z-index: 101;
}