*{ margin:0; padding:0;}
li{ list-style:none;}
#div1{
	 width:750px; 
	 height:300px; 
	 overflow:hidden; 
	 margin:50px auto; 
	 position:relative;
 }
#div1 ol{
	 position:absolute; 
	 right:5px;
	 bottom:5px; 
	 height:25px; 
	 z-index:999;
 }
#div1 ol li{ 
	 float:left;
	 width:20px; 
	 height:20px; 
	 text-align:center; 
	 border:1px solid #000000; 
	 margin:2px; 
	 cursor:pointer; 
	 color:#000000; 
	 background:lightgray; 
	 margin-top:2px;
 }
#div1 ol li.actived{
	 background:gray;
	 font-weight:bold;
	 color:#000000;
	 width:22px;
	 height:22px;
	 margin-top:0;
 }
#div1 ul{ 
	position:absolute;
	left:0; 
	top:0;
}
#div1 ul li{
	width:750px; 
	height:300px;  
	float:left;
}
#div1 ul li img{
	width:750px; 
	height:300px; 
	float:left;
}