rem: Object.extend(this.params, this.DEFAULT_PARAMS); 
add: OpenLayers.Util.applyDefaults( this.params, this.DEFAULT_PARAMS ); 
context:     initialize: function(name, url, params) {        OpenLayers.Layer.Grid.prototype.initialize.apply(this, arguments);        Object.extend(this.params, this.DEFAULT_PARAMS);    },    
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1027/4d0179df503768763ea059f8b12bb532227dfd89/WMS.js/buggy/lib/OpenLayers/Layer/WMS.js