.sample{
height:300px;
left:386px;
position:relative;
top:-289px;
width:500px;


}




#cont{width:550px;margin:0 auto;background:#fff;text-align:left;padding:20px}

.buttons{padding:5px;}
.buttons span{color:#0080FF;padding:0 5px;cursor:pointer;font:10px Verdana}
.buttons span.active, .buttons span:hover{background:#0080FF;color:#fff}


#box1, #box2, #box3, #box4{
	position:absolute;
}


.mask{
	position:relative;
	width:480px;
	height:240px;
	overflow:hidden;
}
.mask img{
	position:absolute;
	display:block;
	border:none;
}