add: data: '', 
context: Drupal.progressBar.prototype.sendPing = function () {  if (this.timer) {    clearTimeout(this.timer);  }  if (this.uri) {    var pb = this;    $.ajax({      type: this.method,      url: this.uri,      success: function (data) {        // Parse response        var progress = Drupal.parseJson(data);        // Display errors        if (progress.status == 0) {          pb.displayError(progress.data);          return;        }        // Update display        pb.setProgress(progress.percentage, progress.message);        // Schedule next timer        pb.timer = setTimeout(function() { pb.sendPing(); }, pb.delay);      },      error: function (xmlhttp) {        pb.displayError('An HTTP error '+ xmlhttp.status +' occured.\n'+ pb.uri);      }    });  }}
meta: 639	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/639/3fa1e2b6f74f5e32f4a4e7c2fb2965f4eea66433/progress.js/clean/misc/progress.js