Make it so getMousePosition does not report incorrect position when borders are used in containing elements, by replacing the pagePosition method with a new one and attaching map events to the internal viewport div instead of the user provided map div. r=erilem,tschaub (closes #2247)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10871 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -513,7 +513,7 @@ OpenLayers.Map = OpenLayers.Class({
         this.viewPortDiv.appendChild(this.layerContainerDiv);
 
         this.events = new OpenLayers.Events(this, 
-                                            this.div, 
+                                            this.viewPortDiv, 
                                             this.EVENT_TYPES, 
                                             this.fallThrough, 
                                             {includeXY: true});
@@ -610,7 +610,6 @@ OpenLayers.Map = OpenLayers.Class({
     render: function(div) {
         this.div = OpenLayers.Util.getElement(div);
         OpenLayers.Element.addClass(this.div, 'olMap');
-        this.events.attachToElement(this.div);
         this.viewPortDiv.parentNode.removeChild(this.viewPortDiv);
         this.div.appendChild(this.viewPortDiv);
         this.updateSize();