html,body,#bg,#bg table,#bg td
img{display:block}

#bg div{
position:absolute;
width:000%;
height:000%;
top:0%;
left:0%; 
z-index:-1;
}

#bg td{
vertical-align:middle;
text-align:center;
z-index:1;
}

#bg img{
min-height:50%;
min-width:50%;
margin:0 auto; 
z-index:1;
}