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: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1027/e658877014d82d81b6e1cf2779f273500a3c3ff3/Map.js/clean/lib/OpenLayers/Map.js