Respecting fractional zoom when desired. Allowing string argument to map.zoomTo. r=bartvde (closes #2180)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10026 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -1576,7 +1576,13 @@ OpenLayers.Map = OpenLayers.Class({
     moveTo: function(lonlat, zoom, options) {
         if (!options) { 
             options = {};
-        }    
+        }
+        if (zoom != null) {
+            zoom = parseFloat(zoom);
+            if (!this.fractionalZoom) {
+                zoom = Math.round(zoom);
+            }
+        }
         // dragging is false by default
         var dragging = options.dragging;
         // forceZoomChange is false by default
@@ -1658,7 +1664,7 @@ OpenLayers.Map = OpenLayers.Class({
             }
 
             if (zoomChanged) {
-                this.zoom = parseInt(zoom);
+                this.zoom = zoom;
                 this.resolution = this.getResolutionForZoom(zoom);
                 // zoom level has changed, increment viewRequestID.
                 this.viewRequestID++;