rem: (this.options.onException || OpenLayers.Ajax.emptyFunction)(this, exception); 
add: if (this.options.onException) { this.options.onException(this, exception); } else {    throw exception; } 
context:   dispatchException: function(exception) {    (this.options.onException || OpenLayers.Ajax.emptyFunction)(this, exception);    OpenLayers.Ajax.Responders.dispatch('onException', this, exception);  }
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/29fa9361a84a28260c929fedbeeb522c738ac33b/Ajax.js/clean/lib/OpenLayers/Ajax.js