Expanded overlay support

Overlays are now added to the tabs control with a checkbox to toggle
visibility in the map. Overlay features on the map are linked to the
HTML table representation.

demos/geomap/geomap-eng.html

@@ -111,9 +111,9 @@ <h1 id="wb-cont">Geomap</h1>
 
 <div class="span-12">
     <div class="span-4 row-start">
-        <div class="wet-boew-geomap span-4 border-all position scaleline layerswitcher" data-wet-boew="{ tables: ['cityE', 'cityW', 'bbox'], features:[ 'POINT (-100, 50)', 'POLYGON ((-120 54, -111 54, -111 50, -120 50, -120 54))', 'LINESTRING (-110 63, -105 60, -100 63)' ] }"></div>
+        <div class="wet-boew-geomap span-4 border-all position scaleline" data-wet-boew="{ tables: ['cityE', 'cityW', 'bbox'], features:[ 'POINT (-100, 50)', 'POLYGON ((-120 54, -111 54, -111 50, -120 50, -120 54))', 'LINESTRING (-110 63, -105 60, -100 63)' ] }"></div>
     </div>
-	<div class="wet-boew-tabbedinterface span-4 row-end">
+	<div id="wet-boew-geomap-layers" class="wet-boew-tabbedinterface span-4 row-end">
 			<ul class="tabs">
 				<li class="default"><a href="#tabs1_1">Maritime Cities</a></li>
 				<li><a href="#tabs1_2">Western Cities</a></li>

src/js/settings.js

@@ -52,7 +52,7 @@ var wet_boew_geomap = {
 				   title: 'KML Demo',
 				   type: 'kml',
 				   url: 'data/sample.kml',		   
-				   visible: false
+				   visible: true
 				},
 				{
 				   title: 'ATOM Demo',