div#content div#overlay div#knop1 {
			position: absolute;
			left: 287px;
			top: 29px;
			width: 37px;
			height: 37px;
			}

			div#content div#overlay div#knop2 {
			position: absolute;
			left: 689px;
			top: 29px;
			width: 37px;
			height: 37px;
			}