function displaymessage() { alert("Hello World!"); } $(myForm).addEvent(submit, function(e) { /** * Prevent the submit event */ new Event(e).stop(); /** * This empties the log and shows the spinning indicator */ var log = $(log_res).empty().addClass(ajax-loading); /** * send takes care of encoding and returns the Ajax instance. * onComplete removes the spinner from the log. */ this.send({ update: log, onComplete: function() { log.removeClass(ajax-loading); } }); });