rem: getResponseHeader: function(header){ return this._responseHeaders[header]; 
add: getResponseHeader: function(/*String*/header){ return this._responseHeaders[header]; 
context: 	getResponseHeader: function(header){		return this._responseHeaders[header];	},
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/XhrIframeProxy.js/buggy/www/resources/dojo-ajax/src/io/XhrIframeProxy.js