Patch from Erik/I to fix:

Popups don't move adequately after zooming with scroll wheel
(Closes #494)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@4250 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Popup/Anchored.js

@@ -91,11 +91,15 @@ OpenLayers.Popup.Anchored =
 
     /**
      * Method: moveTo
+     * Since the popup is moving to a new px, it might need also to be moved
+     *     relative to where the marker is.
      * 
      * Parameters:
      * px - {<OpenLayers.Pixel>}
      */
     moveTo: function(px) {
+        this.relativePosition = this.calculateRelativePosition(px);
+        
         var newPx = this.calculateNewPx(px);
         
         var newArguments = new Array(newPx);