function submitEmail()
{
	var email = document.getElementById('email_input').value;
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	if (reg.test(email) == false)
	{
		alert('Ungültige E-Mail Adresse');
		return false;
	}
	else
	{
		document.getElementById('email_notify_form').submit();
		return false;
	}
}