//---------------------- FUNCTIONS-----------------------------

/* display - none, block (goes on separate line), inline (stays next to element) */
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 addOption(selectId, txt, val){
 var objOption = new Option(txt, val);
 document.getElementById(selectId).options.add(objOption);
} 

// onclick="open_win(\'url'\',\'\',\'scrollbars=yes,resizable=yes,menubar=no, status=no, toolbar=no, location=no, width=550,height=450\')"
function setInnerText (elementId, text) {
var element;
if (document.getElementById) {
element = document.getElementById(elementId);
}
 else if (document.all) {
element = document.all[elementId];
}
if (element) {
if (typeof element.textContent != 'undefined') {
 element.textContent = text;
}
else if (typeof element.innerText != 'undefined') {
element.innerText = text;
}
 else if (typeof element.removeChild != 'undefined') {
 while (element.hasChildNodes()) {
 element.removeChild(element.lastChild);
 }
 element.appendChild(document.createTextNode(text)) ;
 }
 }
}
function jump_menu(targ,selObj,restore){
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function open_win(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function close_win() { //v2.0
  window.close(this);
}

function subscriber_type(type){

if(type=='ind'){
	//document.getElementById('subs_ind').style.visibility="visible";	
	//document.getElementById('subs_group').style.visibility="hidden";
		document.getElementById('subs_ind').style.display="block";	
	document.getElementById('subs_group').style.display="none";
}else if(type=='group'){
	document.getElementById('subs_ind').style.display="none";	
	document.getElementById('subs_group').style.display="block";
}else{
	document.getElementById('subs_ind').style.display="none";	
	document.getElementById('subs_group').style.display="none";		
}
}
  
// onsubmit="return chkval_enquiry(this);"
function emailCheck (emailStr) {

/* 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=1;

/* 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("Email address seems incorrect (check @ and .'s)");
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("Ths username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Ths domain name contains invalid characters.");
return false;
   }
}

// 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.  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("The domain name does not seem to be valid.");
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("The address must end in a well-known domain or two letter " + "country.");
return false;
}

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

if (len<2) {
alert("This address is missing a hostname!");
return false;
}

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

function chkval_pw_send(form){
 
if(form.email.value ==  "" ){ // check that a valid value exists for the contact details
	alert("An email address is required.");
	form.email.focus();
	return false;} 	

return true;
}

function chkval_login(form){
 
if(form.uname.value ==  "" ){ // check that a valid value exists for the contact details
	alert("A username is required.");
	form.uname.focus();
	return false;} 	
if(form.pass.value ==  "" ){ // check that a valid value exists for the contact details
	alert("A password is required.");
	form.pass.focus();
	return false;} 
return true;
}

//-------------------------- FORM VALIDATIONS -------------------------
function chkval_doc(form, type){
if(type =='add'){
if(form.file.value ==  ""){ // check that a valid value exists for the contact details
	alert("A file is required.");
	form.file.focus();
	return false;}	
}
if(form.title.value ==  "" ){ // check that a valid value exists for the name
	alert("A title is required.");
	form.title.focus();
	return false;} 
if(form.category.value ==  ""){ // check that a valid value exists for the contact details
	alert("A category is required.");
	form.category.focus();
	return false;}
if(form.date_day.value ==  "" ){ // check that a valid value exists for the name
	alert("A date - day is required.");
	form.date_day.focus();
	return false;} 
if(form.date_month.value ==  "" ){ // check that a valid value exists for the name
	alert("A date - month is required.");
	form.date_month.focus();
	return false;}
if(form.date_year.value ==  "" ){ // check that a valid value exists for the name
	alert("A date - year is required.");
	form.date_year.focus();
	return false;}	
return true;
}

function chkval_subscriber(form){
if(form.first_name.value ==  "" ){ // check that a valid value exists for the first name
	alert("Your first name is required.");
	form.first_name.focus();
	return false;} 
if(form.last_name.value ==  "" ){ // check that a valid value exists for the last name
	alert("Your last name is required.");
	form.last_name.focus();
	return false;} 	
if(form.email.value ==  "" ){ // check that a valid value exists for the name
	alert("Your email is required.");
	form.email.focus();
	return false;} 
	
	if(emailCheck (form.email.value) == false){
		return false;
	}
}

function chkval_enquiry(form){
if(form.name.value ==  "" ){ // check that a valid value exists for the name
	alert("Your name is required.");
	form.name.focus();
	return false;} 
if(form.org.value ==  ""){ // check that a valid value exists for the contact details
	alert("Your company or organisation is required.");
	form.org.focus();
	return false;}	
if(form.email.value ==  ""){ // check that a valid value exists for the contact details
	alert("Your email is required.");
	form.email.focus();
	return false;}
	if(emailCheck (form.email.value) == false){
		return false;
	}	
if(form.enquiry.value ==  ""){ // check that a valid value exists for the query
	alert("We need some details for your comment / enquiry.");
	form.enquiry.focus();
	return false;}
return true;
}

function chkval_email_create(form){
if(form.subject_line.value ==  "" ){ // check that a valid value exists for the name
	alert("A subject line is required.");
	form.subject_line.focus();
	return false;}
if(form.body.value ==  "" ){ // check that a valid value exists for the name
	alert("Content is required.");
	form.body.focus();
	return false;}
	
return true;
}