function submitCalendar(frm) { 
	if (frm.elements['do-what'].value != "Email Reminder") { 
		return true; 
	} else { 
		if (! frm.email.value.match(/^[A-Za-z0-9_\+-]+(\.[A-Za-z0-9_\+-]+)*@[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)*\.([A-Za-z]{2,4})$/)) { 
			alert('Please enter a valid email address!'); 
			return false; 
		} 
		return true; 
	} 
}