var isSubmit = false;

function checkAll(field) {
    for (i = 0; i < field.length; i++)
        field[i].checked = true ;
}

function uncheckAll(field) {
    for (i = 0; i < field.length; i++)
        field[i].checked = false ;
}

function nextField(val, length, target, e) {
    if (val.length >= length && goodchar(e)) {
        document.getElementById(target).focus();
    }
}

function validateEmail (emailStr, errorMsg) {

    /* 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(errorMsg);
        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(errorMsg);
            return false;
        }
    }
    for (i=0; i<domain.length; i++) {
        if (domain.charCodeAt(i)>127) {
            alert(errorMsg);
            return false;
        }
    }

    // See if "user" is valid 

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

        // user is not valid

        alert(errorMsg);
        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(errorMsg);
                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(errorMsg);
            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(errorMsg);
        return false;
    }

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

    if (len<2) {
        alert(errorMsg);
        return false;
    }

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

// return the value of the radio button that is checked
// return an empty string if none are checked, or
// there are no radio buttons
function getCheckedValue(radioObj) {
    if(!radioObj)
        return "";
    var radioLength = radioObj.length;
    if(radioLength == undefined)
        if(radioObj.checked)
            return radioObj.value;
        else
            return "";
    for(var i = 0; i < radioLength; i++) {
        if(radioObj[i].checked) {
            return radioObj[i].value;
        }
    }
    return "";
}

function showDiv(divId) {
    document.getElementById(divId).style.display = 'block';
}

function hideDiv(divId) {
    document.getElementById(divId).style.display = 'none';
}

function confirmLeave(event_, msg) {
    if (!event_ && window.event) {
        event_ = window.event;
    }
    
    // don't run if submit button was clicked
    if (!isSubmit) {
        event_.returnValue = msg;

        return msg;
    }
}
function confirmClear(msg, url) {
    var answer = confirm(msg);
    if (answer) {
        isSubmit = true;
        self.location=url;
    }
}

function getkey(e){
    if (window.event)
       return window.event.keyCode;
    else if (e)
       return e.which;
    else
       return null;
}

function goodchar(e) {
    var key, keychar;
    key = getkey(e);
    if (key == null) return true;

    var goods = '0123456789'

    // get character
    keychar = String.fromCharCode(key);
    keychar = keychar.toLowerCase();
    goods = goods.toLowerCase();

    // check goodkeys
    if (goods.indexOf(keychar) != -1)
            return true;

    // control keys
/*
    if ( key==null || key==0 || key==8 || key==9 || key==13 || key==27 )
       return true;
*/

    // else return false
    return false;
}

function emailFormChanged(frm) {
    if (frm.emailAddress.value == null || frm.emailAddress.value == '') {
        return false;
    }
    return true;
}

function phoneFormChanged() {
    if (document.frm.areaCode.value != null && document.frm.areaCode.value != '') {
        return true;
    }

    if (document.frm.exchange.value != null && document.frm.exchange.value != '') {
        return true;
    }

    if (document.frm.station.value != null && document.frm.station.value != '') {
        return true;
    }

    return false;
}

function mailFormChanged() {
    if (document.frm.firstName.value != null && document.frm.firstName.value != '') {
        return true;
    }

    if (document.frm.lastName.value != null && document.frm.lastName.value != '') {
        return true;
    }
   
    if (document.frm.lastName.value != null && document.frm.businessName.value != '') {
        return true;
    }

    if (document.frm.lastName.value != null && document.frm.businessDesignation.value != '') {
        return true;
    }

    if (document.frm.address1.value != null && document.frm.address1.value != '') {
        return true;
    }

    if (document.frm.address2.value != null && document.frm.address2.value != '') {
        return true;
    }

    if (document.frm.zip.value != null && document.frm.zip.value != '') {
        return true;
    }

    if (divisionChecked()) {
        return true;
    }

    return false;
}

function divisionChecked() {
    var anyChecked = false;
    if (!document.frm.divisions) {
	return false;
    }
    for (i = 0; i < document.frm.divisions.length; i++) {
        if (document.frm.divisions[i].checked == true) {
            anyChecked = true;
            break;
        }
    }
    return anyChecked;
}

function optoutallFormChanged() {
    if (document.frm.firstName.value != null && document.frm.firstName.value != '') {
        return true;
    }

    if (document.frm.lastName.value != null && document.frm.lastName.value != '') {
        return true;
    }

    if (document.frm.lastName.value != null && document.frm.businessName.value != '') {
        return true;
    }

    if (document.frm.lastName.value != null && document.frm.businessDesignation.value != '') {
        return true;
    }

    if (document.frm.address1.value != null && document.frm.address1.value != '') {
        return true;
    }

    if (document.frm.address2.value != null && document.frm.address2.value != '') {
        return true;
    }

    if (document.frm.zip.value != null && document.frm.zip.value != '') {
        return true;
    }

    if (document.frm.phone1AreaCode.value != null && document.frm.phone1AreaCode.value != '') {
        return true;
    }

    if (document.frm.phone1Exchange.value != null && document.frm.phone1Exchange.value != '') {
        return true;
    }

    if (document.frm.phone1Station.value != null && document.frm.phone1Station.value != '') {
        return true;
    }

    if (sourceSelected(document.frm.phone1Source)) {
        return true;
    }

    if (document.frm.phone2AreaCode.value != null && document.frm.phone2AreaCode.value != '') {
        return true;
    }

    if (document.frm.phone2Exchange.value != null && document.frm.phone2Exchange.value != '') {
        return true;
    }

    if (document.frm.phone2Station.value != null && document.frm.phone2Station.value != '') {
        return true;
    }

    if (sourceSelected(document.frm.phone2Source)) {
        return true;
    }

    if (document.frm.phone3AreaCode.value != null && document.frm.phone3AreaCode.value != '') {
        return true;
    }

    if (document.frm.phone3Exchange.value != null && document.frm.phone3Exchange.value != '') {
        return true;
    }

    if (document.frm.phone3Station.value != null && document.frm.phone3Station.value != '') {
        return true;
    }

    if (sourceSelected(document.frm.phone3Source)) {
        return true;
    }

    if (document.frm.emailAddress.value != null && document.frm.emailAddress.value != '') {
        return true;
    }

    return false;
}

function sourceSelected(source) {
    for (i = 0; i < source.length; i++) {
        if (source[i].checked == true) {
            return true;
        }
    }
    return false;
}
//  End -->