getResponseHeader: function(header) { if(this.readyState < 3) throw new Error("INVALID_STATE_ERR"); else { var returnedHeaders = []; for(rHeader in this.responseHeaders) { if(rHeader.match(new Regexp(header, "i"))) returnedHeaders.push(this.responseHeaders[rHeader]); } if(returnedHeaders != []) return returnedHeaders.join(", "); } return null; 
getResponseHeader: function(header){ if (this.readyState < 3) throw new Error("INVALID_STATE_ERR"); else { var returnedHeaders = []; for (var rHeader in this.responseHeaders) { if (rHeader.match(new Regexp(header, "i"))) returnedHeaders.push(this.responseHeaders[rHeader]); }  if (returnedHeaders.length) return returnedHeaders.join(", "); }  return null; 
		getResponseHeader: function(header) {		  if(this.readyState < 3) throw new Error("INVALID_STATE_ERR");		  else {		    var returnedHeaders = [];		    for(rHeader in this.responseHeaders) {		      if(rHeader.match(new Regexp(header, "i"))) returnedHeaders.push(this.responseHeaders[rHeader]);		    }		    if(returnedHeaders != []) return returnedHeaders.join(", ");		  }		  return null;		},
6056	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6056/de71a046e619884292b122ddcf1401ad9932a5c7/env.js/buggy/build/runtest/env.js