function validate(language){
  // Messaggi in lingua
  var msg = new Array();
  if (language=='it') {
    msg[0] = 'Inserire il nome dell\'azienda';
    msg[1] = 'Inserire il nome';
    msg[2] = 'Inserire il cognome';
    msg[3] = 'Inserire l\'indirizzo email';
    msg[4] = 'Inserire l\'indirizzo';
    msg[5] = 'Inserire la citta\'';
    msg[6] = 'Inserire il CAP';
    msg[7] = 'Inserire la nazione';
    msg[8] = 'Inserire il testo della richiesta';
  } else {
    msg[0] = 'Fill company name field';
    msg[1] = 'Fill firstname field';
    msg[2] = 'Fill lastname field';
    msg[3] = 'Fill email address field';
    msg[4] = 'Fill address field';
    msg[5] = 'Fill city field';
    msg[6] = 'Fill ZIP code field';
    msg[7] = 'Fill country field';
    msg[8] = 'Fill request field';
  }

  
  //Inizio controlli
  var form = document.contacts;

  if (form.company.value == null) { alert(msg[0]); return false;}
  if (form.firstname.value == null) {alert(msg[1]); return false;}
  if (form.lastname.value == null) {alert(msg[2]); return false;}
  if (form.mailaddress.value == null) {alert(msg[3]); return false;}
  if (form.address1.value == null) {alert(msg[4]); return false;}
  if (form.city.value == null) {alert(msg[5]); return false;}
  if (form.zipcode.value == null) {alert(msg[6]); return false;}
  if (form.countryName.value == null) {alert(msg[7]); return false;}
  if (form.freetext.value == null) {alert(msg[8]); return false;}

  if (form.company.value == '') { alert(msg[0]); return false;}
  if (form.firstname.value == '') {alert(msg[1]); return false;}
  if (form.lastname.value == '') {alert(msg[2]); return false;}
  if (form.mailaddress.value == '') {alert(msg[3]); return false;}
  if (form.address1.value == '') {alert(msg[4]); return false;}
  if (form.city.value == '') {alert(msg[5]); return false;}
  if (form.zipcode.value == '') {alert(msg[6]); return false;}
  if (form.countryName.value == '') {alert(msg[7]); return false;}
  if (form.freetext.value == '') {alert(msg[8]); return false;}

  if (!emailCheck(form.mailaddress.value, language)) {return false;}
  
  //OK
  return true;
}


function emailCheck (emailStr, language ) {

    var msg = new Array();
    
    if (language=='it'){
      msg[0] = "L'indirizzo email sembra errato (controlla i caratteri @ e .)";
      msg[1] = "Ths username contains invalid characters.";
      msg[2] = "Ths domain name contains invalid characters.";
      msg[3] = "The username doesn't seem to be valid.";
      msg[4] = "Destination IP address is invalid!";
      msg[5] = "The domain name does not seem to be valid.";
      msg[6] = "The address must end in a well-known domain or two letter country.";
      msg[7] = "This address is missing a hostname!";
    } else {
      msg[0] = "Wrong amil address";
      msg[1] = "Ths username contains invalid characters.";
      msg[2] = "Ths domain name contains invalid characters.";
      msg[3] = "The username doesn't seem to be valid.";
      msg[4] = "Destination IP address is invalid!";
      msg[5] = "The domain name does not seem to be valid.";
      msg[6] = "The address must end in a well-known domain or two letter country.";
      msg[7] = "This address is missing a hostname!";
    }

    /* The following variable tells the rest of the function whether or not
    to verify that the address ends in a two-letter country or well-known
    TLD.  1 means check it, 0 means don't. */

    var checkTLD=0;

    /* The following is the list of known TLDs that an e-mail address must end with. */

    var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

    /* 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(msg[0]);
        return false;
    }
    var user=matchArray[1];
    var domain=matchArray[2];

    // Start by checking that only basic ASCII characters are in the strings (0-127).

    for (i=0; i<user.length; i++) {
        if (user.charCodeAt(i)>127) {
            alert(msg[1]);
            return false;
        }
    }
    for (i=0; i<domain.length; i++) {
        if (domain.charCodeAt(i)>127) {
            alert(msg[2]);
            return false;
        }
    }

    // See if "user" is valid 

    if (user.match(userPat)==null) {

        // user is not valid

        alert(msg[3]);
        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(msg[4]);
                return false;
            }
        }
        return true;
    }

    // Domain is symbolic name.  Check if it's valid.

    var atomPat=new RegExp("^" + atom + "$");
    var domArr=domain.split(".");
    var len=domArr.length;
    for (i=0;i<len;i++) {
        if (domArr[i].search(atomPat)==-1) {
            alert(msg[5]);
            return false;
        }
    }

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

    if (checkTLD && domArr[domArr.length-1].length!=2 && 
        domArr[domArr.length-1].search(knownDomsPat)==-1) {
        alert(msg[6]);
        return false;
    }

    // Make sure there's a host name preceding the domain.

    if (len<2) {
        alert(msg[7]);
        return false;
    }

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