.slider_course {
	margin-top:30px;
	width:100%;
	height:300px;
	position:relative;
}

#header_images {
	width:420px;
	width:600px;
	width:460px;
	height:0;
	overflow:hidden;
	margin:0 auto;
	position:absolute;
	left:50%;
	margin-left:-230px}

.header_image {
	margin:0 auto;
	opacity:0;
	position:absolute;
	}

#aside2 {
	/*height:558px;*/
	width:100%;}

#header_controls_left, #header_controls_right {
	position:absolute;
	top:0;
	z-index:99;
	cursor:pointer;
	display:block;
	width:20px;
	height:316px;
	background:url(../images/slider_arrows.png) 0 135px no-repeat;
	text-indent:-9999px;
	border:0;}

#header_controls_right {
	background:url(../images/slider_arrows.png) -20px 135px no-repeat;
	right:38px;}

#overlay_bg {
	width:420px;
	width:600px;
	width:460px;
	top:0;
	left:0px;
	height:0;
	position:absolute;
	opacity:.4;
	cursor:pointer}