var str_span = "argeweb_halve_banner";

			elem = document.getElementById(str_span);
			aantal = elem.childNodes.length;
			for( i = 0; i < aantal; i++ ){
				elem.removeChild( elem.childNodes[0] );
			}

			elem_a = document.createElement("A");
			elem_a.setAttribute("href","http://www.de-witteberk.nl");
			elem_a.setAttribute("target","_blank");

			elem_b = document.createElement("IMG");
			elem_b.setAttribute("src","http://www.argeweb.nl/banner_bin/banner_img.php?site_id=2492&banner_type=halve_banner");
			elem_b.style.border = "none";

			elem_a.appendChild( elem_b );
			elem.appendChild( elem_a );