// JavaScript Document
level = 1;
	$('level2').setStyle ("display", "none");
	$('level3').setStyle ("display", "none");
	zoom();
	
	function zoomIn() {
		level++;
		zoom();
	}
	
	function zoomOut() {
		level--;
		zoom();
	}
	
	function zoom() {	
				$('level1').setStyle ("display", "none");
				$('level2').setStyle ("display", "none");
				$('level3').setStyle ("display", "none");
		switch (level) {
			case 1:
				$('level1').setStyle ("display", "block");
				$('zoomout').setAttribute ("src", "/images/img_map_zoom_out_non.gif");
				$('zoomout').setAttribute ("onClick", "");
			break;
			case 2:
				$('level2').setStyle ("display", "block");
				$('zoomin').setAttribute ("src", "/images/img_map_zoom_in.gif");
				$('zoomin').setAttribute ("onClick", "zoomIn()");
				$('zoomout').setAttribute ("src", "/images/img_map_zoom_out.gif");
				$('zoomout').setAttribute ("onClick", "zoomOut()");
			break;
			case 3:
				$('level3').setStyle ("display", "block");
				$('zoomin').setAttribute ("src", "/images/img_map_zoom_in_non.gif");
				$('zoomin').setAttribute ("onClick", "");
			break;
		}
	}