function controllo(){
var from = document.forms[nomeForm].elements['FROM'].value;
var name = document.forms[nomeForm].elements['NAME'].value;
if(name != '' && from != ''){
if(from.indexOf('@') != -1){
alert('tutto ok');
}
else{
alert('Manca la @');
}
}
else{
alert("Uno o più campi vuoti presenti");
}
}