var interactivemap = function () {
		if(document.getElementsByTagName) {
			var areas = document.getElementsByTagName('area');
			for(var i=0;i<areas.length;i++) {
				areas[i].onmouseover = function () {
					var arr   = this.className.split("|");
					var kaart = document.getElementById("map_" + arr[0]);
					kaart.src = "_images/" + arr[0] + "/" + arr[1];
				}

				areas[i].onmouseout = function () {
					var arr   = this.className.split("|");
					var kaart = document.getElementById("map_" + arr[0]);
					kaart.src = "_images/" + arr[0] + "/" + arr[0] + ".gif";
				}
			}
		}
	};

interactivemap();