function changeClass(obj,className) {
	$(obj).addClassName(className);
}
function restoreClass(obj,className) {
	$(obj).removeClassName(className);
}
function clearInput(obj) {
	changeClass(obj,'active');
	$(obj).value = '';
}
function restoreInput(obj,txt) {
	if ($(obj).value == '') {
		restoreClass(obj,'active');
		$(obj).value = txt;
	}
}
function submitSubscribeForm(form) {
var fname = $(form).fname;
var email = $(form).email;
	if(isWhitespace(fname.value) || fname.value == 'First name...') {
		return error(fname,'Please enter your first name.');
	}
	else if(isWhitespace(email.value) || email.value == 'E-mail address...') {
		return error(email,'Please enter your e-mail address.');
	}
	else if(!isValidEmail(email.value)) {
		return error(email,'Please enter a valid e-mail address.');
	}
	else {
		$(form).submit();
	}
}