rem: return this.size; 
add: var size = null; if (this.size != null) { size = this.size.clone(); } return size; 
context:     getSize: function () {        return this.size;    },
meta: 4411	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4411/a5739d4b243cc6484aa6b508b1a1c518b64ed5b0/Map.js/buggy/lib/OpenLayers/Map.js