bringing down r1660 from sandbox/euzuro/layerclone

git-svn-id: http://svn.openlayers.org/trunk/openlayers@1661 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2006-10-06 18:23:51 +00:00
parent 9bae3e8848
commit 8b909e9e53
1 changed files with 5 additions and 1 deletions
--- a/lib/OpenLayers/BaseTypes.js
+++ b/lib/OpenLayers/BaseTypes.js
@@ -115,7 +115,11 @@ OpenLayers.Pixel.prototype = {
    * @type OpenLayers.Pixel
    */
    offset:function(px) {
-        return this.add(px.x, px.y);                
+        var newPx = this.clone();
+        if (px) {
+            newPx = this.add(px.x, px.y);
+        }
+        return newPx;
    },
    
    /** @final @type str */