Positioning
#box
#pngbox
#box {
position:absolute;
top:100px;
left:300px;
width:100px;
height:200px;
border:#000 1px solid;
padding:6px;
}
#pngbox {
position:relative;
background:url(img/see-thru-back.png) no-repeat;
width:125px;
height:125px;
float:right;
margin-right:-96px;
padding:6px;
}