function isEmpty(str) {
		var empty = (str == null || str == "") ? true : false
		return empty
	}
	
	function validate(contactsform) {
	
		if (isEmpty(contactsform.name.value)) {
			alert ("Please enter your name.")
			contactsform.name.focus()
			return false
		}
		
		if (isEmpty(contactsform.email.value)) {
			alert ("Please enter your email address.")
			contactsform.email.focus()
			return false
		}
		
		return true
	}