.ppt{ width:721px; height:340px; position:relative; overflow:hidden;border:none  }

.focusBox { position: relative; width:721px; height:340px; overflow: hidden; }
.focusBox ul { margin:0;list-style:none; border:none}
.focusBox ul li{ margin:0;list-style:none; border:none}
	.focusBox .pic{ position:relative; z-index:0; }
	.focusBox .pic img { width:721px; height:340px; display: block; }
	.focusBox .hd { width:100%; position: absolute; bottom: 10px; text-align: center; font-size:0; z-index:1; }
	.focusBox .hd li{margin: 0 5px; background: url(dot.png) no-repeat 0 -16px; height: 16px; overflow: hidden; width: 16px; cursor: pointer;
		display:inline-block; *display:inline; zoom:1;  _background: url(dot8.png) no-repeat 0 -16px; list-style:none;
	}
	.focusBox .hd .on{ background-position:0 0; }