add:  obj.tile = null;  
context:     clone: function (obj) {                if (obj == null) {            obj = new OpenLayers.Layer.WMS.Untiled(this.name,                                                   this.url,                                                   this.params,                                                   this.options);        }        //get all additions from superclasses        obj = OpenLayers.Layer.HTTPRequest.prototype.clone.apply(this, [obj]);        // copy/set any non-init, non-simple values here        return obj;    },    
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/1ded257df1a7162f455313c122e657caa664bd79/Untiled.js/clean/lib/OpenLayers/Layer/WMS/Untiled.js