/ This event is fired just before the form is submitted. We can take this opportunity to perform validation.
		// Add an event handler to the form.
		form.addSubmitHandler(new FormPanel.SubmitHandler() {
			public void onSubmit(SubmitEvent event) {


				if (nameBox.getText().length() == 0) {
					Window.alert("Name must not be empty");
					event.cancel();
				}

				// get the tags and set it to genresBox
				if (!doSubmit)
					event.cancel();
               // get the genres from tagger and set it to genresbox (for dopost method)
				else {
					int i = 0;
					StringBuilder string = new StringBuilder();