fixed hiding JSObserver info box when unused

overviewer_core/data/js_src/views.js

@@ -142,25 +142,25 @@ overviewer.views.ProgressView = Backbone.View.extend({
         this.el.id = 'progressDiv';
         this.el.innerHTML = 'Current Render Progress';
         overviewer.map.controls[google.maps.ControlPosition.BOTTOM_RIGHT].push(this.el);
-        this.el.hidden = true;
+        $(this.el).hide();
         $.ajaxSetup({cache: false});
     },
     updateProgress: function() {
         e = this;
         $.getJSON('progress.json', null, function(d){
             if (!(d == null||d=='')) {
-                e.el.hidden = false;
+                $(e.el).show();
                 e.el.innerHTML = d['message'];
                 if (d.update > 0) {
                     setTimeout("e.updateProgress()", d.update);
                 } else {
                     setTimeout("e.updateProgress()", 60000);
                     e.el.innerHTML="Hidden - d.update < 0";
-                    e.el.hidden = true;
+                    $(e.el).hide();
                 }
             } else {
                 e.el.innerHTML="Hidden - !!d==false";
-                e.el.hidden = true;
+                $(e.el).hide();
             }
         });
     }