function zoovldte(formName){ if(formName.email){ if (formName.email.value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) == -1){ alert("Email address is invalid."); return false; } } else { alert("There is no email address field within the form."); return false; } } document.write('');