if (typeof this.options.parameters == 'string') this.options.parameters = this.options.parameters.toQueryParams(); 
this.options.parameters = $H(typeof this.options.parameters == 'string' ? this.options.parameters.toQueryParams() : this.options.parameters); 
  setOptions: function(options) {    this.options = {      method:       'post',      asynchronous: true,      contentType:  'application/x-www-form-urlencoded',      encoding:     'UTF-8',      parameters:   ''    }    Object.extend(this.options, options || {});    this.options.method = this.options.method.toLowerCase();    if (typeof this.options.parameters == 'string')      this.options.parameters = this.options.parameters.toQueryParams();  }
4053	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4053/99db091466168b09f46c79ff71f0e07c7fd4a8db/prototype.js/clean/lib/prototype.js