adding ability to add a layer to the viewport instead of the layerContainerDiv - this is especially for the virtual earth implementation, as we want to simply make a div that stays put. we dont want it sliding around with the layerdiv. it should stay where it is and let its own events handler move it around

git-svn-id: http://svn.openlayers.org/trunk/openlayers@588 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -139,7 +139,12 @@ OpenLayers.Map.prototype = {
         } else {
             layer.div.style.zIndex = this.Z_INDEX_BASE['Layer'] + this.layers.length;
         }
-        this.layerContainerDiv.appendChild(layer.div);
+
+        if (layer.viewPortLayer) {
+            this.viewPortDiv.appendChild(layer.div);
+        } else {
+            this.layerContainerDiv.appendChild(layer.div);
+        }
         this.layers.push(layer);
         this.events.triggerEvent("addlayer");
     },