function Form1_Validator(theForm)
{
  if (theForm.societa.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"Azienda\".");
    theForm.azienda.focus();
    return (false);
  }
  if (theForm.nome.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"nome\".");
    theForm.nome.focus();
    return (false);
  }

  if (theForm.cognome.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"Cognome\".");
    theForm.cognome.focus();
    return (false);
  }
  if (theForm.indirizzo.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"indirizzo\".");
    theForm.indirizzo.focus();
    return (false);
  }

  if (theForm.cap.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"CAP\".");
    theForm.cap.focus();
    return (false);
  }

  if (theForm.cap.value.length < 5)
  {
    alert("Codice \"CAP\" deve essere di 5 cifre.");
    theForm.cap.focus();
    return (false);
  }

  if (theForm.cap.value.length > 5)
  {
    alert("Codice \"CAP\" troppo lungo.");
    theForm.cap.focus();
    return (false);
  }

  var checkOK = "0123456789-.";
  var checkStr = theForm.cap.value;
  var allValid = true;
  var validGroups = true;
  var decPoints = 0;
  var allNum = "";
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
    if (ch != ".")
      allNum += ch;
  }
  if (!allValid)
  {
    alert("Il campo \"CAP\" č solo numerico.");
    theForm.cap.focus();
    return (false);
  }

  if (theForm.citta.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"cittā\".");
    theForm.citta.focus();
    return (false);
  }

  if (theForm.telefono.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"Telefono\".");
    theForm.telefono.focus();
    return (false);
  }
  
  if (theForm.fax.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"Fax\".");
    theForm.fax.focus();
    return (false);
  }  
  if (theForm.email.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"e-mail\".");
    theForm.email.focus();
    return (false);
  }
  if (theForm.email2.value == "")
  {
    alert("ATTENZIONE! Compilare il campo  \"e-mail incaricato\".");
    theForm.email2.focus();
    return (false);
  }  
if(emailCheck (theForm.email.value)==false)
	{
	theForm.email.focus();
	return (false)
	}
	
if(emailCheck (theForm.email2.value)==false)
	{
	theForm.email2.focus();
	return (false)
	}	
  return (true);
  
  
}

function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
	alert("Email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The username doesn't seem to be valid.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.")
    return false
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   alert("The address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}