function showError(errorText) {
	Ext.MessageBox.show({
		title: 'Error',
		msg: errorText,
		buttons: Ext.MessageBox.OK,
		closable: false,
		icon: Ext.MessageBox.ERROR
	});
}

function showInformation(informationTitle, informationText) {
	Ext.MessageBox.show({
		title: informationTitle,
		msg: informationText,
		buttons: Ext.MessageBox.OK,
		closable: false,
		icon: Ext.MessageBox.INFO
	});
}