.window {
	clear:both;
	width:100%;
	height:275px;
	overflow: hidden;
	position: relative;
}
.window .center_frame {
	left:0px;
}
.islider {
	height: 275px;
	width: 840px;
	position:relative;
	margin:auto;
}
.islider img {
	margin-top: 15px;
}
.next_center_frame {
	top:-275px;
	left:4000px;
}