// JavaScript Document

function validateSignUpForm() {

	var f = document.newsletter_signup;
	var errs = 0;
	var errStr = '';
	var emailRegExp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	
	if (!emailRegExp.test(f.email.value)) {
		errs++;
		errStr += 'You need to enter a valid email address.\n';
	}

	if (errs == 0) {
		f.submit()
	}
	else {
		alert(errStr);
	}
	
}

function clearTextField(formfield, str) {
	
	if ((formfield.value) == str) {
		formfield.value = '';
	}

}

function resetTextField(formfield, str) {

	if (!formfield.value) {
		formfield.value = str;
	}

}