rem:  $(this.progress.element).remove(); this.progress = null; 
add:  if (this.progress.element) { $(this.progress.element).remove(); } if (this.progress.object) { this.progress.object.stopMonitoring(); } 
context: Drupal.ahah.prototype.error = function (error) {  alert(Drupal.t('An error occurred:\n\n@error', { '@error': error }));  // Resore the previous action and target to the form.  element.parent('form').attr( { action: this.form_action, target: this.form_target} );  // Remove progressbar.  $(this.progress.element).remove();  this.progress = null;  // Undo hide.  $(this.wrapper).show();  // Re-enable the element.  $(this.element).removeClass('progess-disabled').attr('disabled', false);};
meta: 639	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/639/212c0484b9ffcd6b2c044f4539477b0d52be905f/ahah.js/buggy/misc/ahah.js