yui connect

    // If the specified HTTP method is GET, setForm() will return an
    // encoded string that is concatenated to the uri to
    // create a querystring.
    if(method.toUpperCase() == 'GET'){
     if(this._sFormData.length !== 0){
      // If the URI already contains a querystring, append an ampersand
      // and then concatenate _sFormData to the URI.
      uri += ((uri.indexOf('?') == -1)?'?':'&') + this._sFormData;
     }
    }
    else if(method.toUpperCase() == 'POST'){
     // If POST data exist in addition to the HTML form data,
     // it will be concatenated to the form data.
     postData = postData?this._sFormData + "&" + postData:this._sFormData;
    }