function sjekk(form)
{
if (form.fromname.value <= 0 ) {alert("Skriv inn ditt navn"); form.fromname.focus(); return false;}
else if (form.Tlf.value <= 0 ) {alert("Skriv inn ditt telefonnummer!"); form.Tlf.focus(); return false;}
else if (form.fromnamemail.value <= 0 ) {alert("Skriv inn din e-post adresse!"); form.fromnamemail.focus(); return false;}
else if (form.fromnamemail.value.indexOf("@") == -1) {alert("Din e-post adresse er ugyldig!"); form.fromnamemail.focus(); return false;}
else if (form.fromnamemail.value.indexOf(".") == -1) {alert("Din e-post adresse er ugyldig!"); form.fromnamemail.focus(); return false;}
else return true;
}