function checkrequired(which)
{
	var pass=true;
	verify1 = document.myform.hiddenvalue.value;
	for (i=0;i<which.elements.length;i++)
	{
		var tempobj=which.elements[i];
		if (tempobj.name.substring(0,8)=="required")
		{
			if (((tempobj.type=="text" || tempobj.type=="textarea") && tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s" && tempobj.selectedIndex<=0))
			{
				pass=false;
				break;
	        	}
	        	else if ((tempobj.type == "file") && (tempobj.value == ''))
	        	{
	        		pass=false;
	        		break;
	        	}
			else if ((tempobj.type == "checkbox") && (tempobj.checked == false))
			{
				pass=false;
				break;
			}
			else if ((tempobj.name == "required_verify") && (tempobj.value != verify1))
			{
				pass=false;
				break;
			}
			else if ((tempobj.name == "required_Email") && (emailCheck(tempobj.value) == false))
			{
				pass=false;
				break;
			}
	    	}
   	}
	
	if (!pass)
        {
            shortFieldName=tempobj.name.substring(9,30).toUpperCase();
            shortFieldName=shortFieldName.replace('_',' ');
            alert(shortFieldName+" is required.");
            return false;
    	}
    	else
	        document.getElementById("f1").submit();
}



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 emailValidator(elem)
{
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailExp))
	{
		return true;
	}
	else
	{
		return false;
	}
}
	
function isAlphabet(elem, helperMsg){
	var alphaExp = /^[a-zA-Z]+$/;
	if(elem.value.match(alphaExp)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}	
}

function isNumeric(elem){
	var numericExpression = /^[0-9]+$/;
	if(elem.value.match(numericExpression)){
		return true;
	}else{
		return false;
	}
}


function selectAll(theSelect)
 {
    for ( var i=0,n=theSelect.options.length; i<n; i++ )
    {
       theSelect.options[i].selected = true;
    }

    return true;
 }

function check(select,max) {
 var items = 0;
  for ( var i = 0; i < select.options.length; i++) {
    select.options[0].disabled;
    if ( select.options[i].selected == true ) { items++; }
    if ( items > max ) { restore(select); alert('you cannot select more than '+max+' options!'); return false; }
  }
    state = new Array;
  save(select);
  return true;
}

function save(select) 
{
  for ( var i = 0; i < select.options.length; i++) 
  {
    state[state.length] = select.options[i].selected;
  }
}

function restore(select) 
{
  for ( var i = 0; i < select.options.length; i++) 
  {
    select.options[i].selected = state[i];
  }
}

function moveOptions(from,to) 
{
// Move them over
  for (var i=0; i<from.options.length; i++) 
  {
    var o = from.options[i];
    if (o.selected) 
    {
      to.options[to.options.length] = new Option( o.text, o.value, false, false);
    }
  }
  // Delete them from original
  for (var i=(from.options.length-1); i>=0; i--) 
  {
    var o = from.options[i];
    if (o.selected) 
    {
      from.options[i] = null;
    }
  }
  from.selectedIndex = -1;
  to.selectedIndex = -1;
}

function checkLogin(fm)
{
	//verifies that the login form is completed correctly
	
	var work = document.getElementById("u");
	
	if ((work == null) || (emailValidator(work) == false) || (work.value.length < 1))
	{
		alert("Login Error: You must enter a valid email address for your username.");
		return false;
	}
	
	
	work = document.getElementById("p");
	
	if ((work == null) || (work.value.length < 1))
	{
		alert("Login Error: You must enter a password to login.");
		return false;
	}
	
	return true;
	
}

function checkPassword(fm)
{
	//verfies the email address for password retrieval
	
	var work = document.getElementById("e");
	
	if ((work == null) || (emailValidator(work) == false) || (work.value.length < 1))
	{
		alert('You must enter a valid email address!');
		return false;
	}
	
	return true;
	
}