function CorrectEmailaddress(SubscriberForm){
if (SubscriberForm.pf_Email.value.length > 255){
alert("Du kan maks. skrive 255 tegn i \"E-mail-adresse\" field.");
SubscriberForm.pf_Email.focus();return (false); 
}
if (SubscriberForm.pf_Email.value == ""){
alert("Angiv venligst værdien for \"E-mail-adresse\" field.");
SubscriberForm.pf_Email.focus();
return (false); 
}
if (SubscriberForm.pf_Email.value.length < 7){
alert("Skriv mindst 7 tegn i \"E-mail-adresse\"field.");
SubscriberForm.pf_Email.focus();
return (false); 
}
pf_Email=SubscriberForm.pf_Email.value;
at=pf_Email.indexOf("@");
lastat=pf_Email.lastIndexOf("@");
dot=pf_Email.lastIndexOf(".");
if(at<1||at!=lastat||dot<at){
alert("Din e-mail-adresse er ikke korrekt. Prøv igen.");
return false;
}
}