body{
margin:0 0 5px 0;
padding:0;
height:  100%;
width: 100%; 
background:#FFFFFF url(images/bxp256152.jpg) left top;
}

.defaultSize{
width:1024px;
height:800px;
position:absolute;
z-index:-1;
top:0;
left:0;
}

.flashBecome{
width:100%;
height:100%;
z-index:1;
position:absolute;
top:0;
left:0;
}