div.innerleft {
 width:20px;
 height:20px;
 float:left;
 background-image:url(../images/inner.gif); 
}

div.outerleft {
 width:20px;
 height:20px;
 float:left;
 background-image:url(../images/outer.gif); 
}

div.rightedge {
 width:20px;
 height:120px;
 float:right;
 background-image:url(../images/right.gif); 
}

div.bottomedge {
 width:120px;
 height:20px;
 float:left;
 margin-top:20px;
 background-image:url(../images/bottom.gif);
}