rem: this.headers = this.options.headers; 
add: this.headers = $merge(this.options.headers); console.log(params, this.options.method); 
context: 	initialize: function(){		var params = $A(arguments).associate({'url': 'string', 'options': 'object'});		this.url = params.url;		this.setTransport();		this.setOptions(params.options);		this.options.isSuccess = this.options.isSuccess || this.isSuccess;		this.headers = this.options.headers;		if (this.options.urlEncoded && this.options.method != 'get'){			var encoding = (this.options.encoding) ? '; charset=' + this.options.encoding : '';			this.setHeader('Content-type', 'application/x-www-form-urlencoded' + encoding);		}	},
meta: 6317	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/6317/c98bc0831d3ee1b1963093cf35ca51bf46db839f/XHR.js/clean/Remote/XHR.js