rem: }.extend(options || {}); 
add: } Object.extend(this.options, options || {}); 
context:   setOptions: function(options) {    this.options = {      method:       'post',      asynchronous: true,      parameters:   ''    }.extend(options || {});  },
meta: 1382	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1382/3f913f897829fb026ef98df2d57f8da94ee5339d/prototype.js/clean/public/javascripts/prototype.js