function DrawBoundaries	(NID, map) {
var request = GXmlHttp.create();
      		request.open("GET", "/xml-nboundaries.php?id="+NID, true);
      		request.onreadystatechange = function() {
        	if (request.readyState == 4) {
          		var xmlDoc = GXml.parse(request.responseText);
          		// obtain the array of markers and loop through it
          		var markers = xmlDoc.documentElement.getElementsByTagName("marker");

		        for (var i = 0; i < markers.length; i++) {
		        	// obtain the attribues of each marker
		            var lat = parseFloat(markers[i].getAttribute("lat"));
		            var lng = parseFloat(markers[i].getAttribute("lng"));
		            var point = new GLatLng(lat,lng);
		            var html = markers[i].getAttribute("html");
		            var label = markers[i].getAttribute("label");
		            // create the marker
		            var marker = createMarker(point,label,html);
		            map.addOverlay(marker);
		        }
		          // put the assembled side_bar_html contents into the side_bar div
		          //document.getElementById("side_bar").innerHTML = side_bar_html;


		          // ========= Now process the polylines ===========
		        var lines = xmlDoc.documentElement.getElementsByTagName("line");
		        // read each line
		        for (var a = 0; a < lines.length; a++) {
		        	// get any line attributes
		            var colour = lines[a].getAttribute("colour");
		            var width  = parseFloat(lines[a].getAttribute("width"));
		            // read each point on that line
		            var points = lines[a].getElementsByTagName("point");
		            var pts = [];
		            for (var i = 0; i < points.length; i++) {
		               pts[i] = new GLatLng(parseFloat(points[i].getAttribute("lat")),
		                                   parseFloat(points[i].getAttribute("lng")));
		        	}
		        	map.addOverlay(new GPolyline(pts,colour,width));
		  		}
          	// ================================================
	      	}
      		}
	    	request.send(null);
}