function clearText(thefield) { 

	if (thefield.defaultValue == thefield.value) thefield.value = "";
	
	}	

function validateForm() {

	if (document.newsletterSignupForm.email.value == '' || document.newsletterSignupForm.email.value == 'Enter your email address') {

		alert('You must enter an email address!');

	} else {

	 	document.newsletterSignupForm.submit();

	}
	
}