.rbroundbox { background: url(simple_background.gif) repeat; }
.rbtop div  { background: url(simple_top_left.gif) no-repeat top left; }
.rbtop      { background: url(simple_top_right.gif) no-repeat top right; }
.rbbot div  { background: url(simple_bottom_left.gif) no-repeat bottom left; }
.rbbot      { background: url(simple_bottom_right.gif) no-repeat bottom right; }

 /* height and width details */
.rbtop div, .rbtop, .rbbot div, .rbbot {
	width: 100%;
	height: 14px;
	font-size: 1px;
}
.rbcontent  { margin: 0 14px; }
.rbroundbox { width: 20em; margin: auto; }