function check_form(newsletterform){ 
if (newsletterform.name.value == "First Name"){ 
alert("Please insert your first name!"); 
newsletterform.name.focus(); 
return (false); 
} 
if (newsletterform.surname.value == "Surname"){ 
alert("Please insert your surname!"); 
newsletterform.surname.focus(); 
return (false); 
}
if (newsletterform.email.value.indexOf('@', 0) == -1){ 
alert("Please insert your eMail!"); 
newsletterform.email.focus(); 
return (false); 
} 
return (true); 
}