function trim(stringToTrim) 
{
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}
function getRandomBytes(howMany) 
{
  var i;
  var bytes = new Array();
  for (i=0; i<howMany; i++)
    bytes[i] = Math.round(Math.random()*255);
  return byteArrayToHex(bytes);
}
function byteArrayToHex(byteArray) 
{
  var result = "";
  if (!byteArray)
    return;
  for (var i=0; i<byteArray.length; i++)
    result += ((byteArray[i]<16) ? "0" : "") + byteArray[i].toString(16);

  return result;
}
function extsubmit()
{
    if((document.subs.email.value.length == 0 ) || (document.subs.password.value.length == 0))
    {
        alert('Your Email and Password are required');
        return;
    }
    else if(!doemailcheck(document.subs.email))
    {
    	return;
    }
    else
    {
       document.subs.genr.value = getRandomBytes(10);
       //alert(document.subs.genr.value);
       //alert(getRandomBytes(5));
        document.subs.password.value = hex_sha256(document.subs.password.value);
        document.subs.password.value = hex_hmac_sha256(document.subs.genr.value,document.subs.password.value);
	    document.subs.password.value = document.subs.password.value + document.subs.genr.value;
    	document.subs.email.value = document.subs.email.value;
        document.subs.submit();
    }
}
function mextsubmit()
{
    if((document.msubs.email.value.length == 0 ) || (document.msubs.password.value.length == 0))
    {
        alert('Your Email and Password are required');
        return;
    }
    else if(!doemailcheck(document.msubs.email))
    {
    	return;
    }
    else
    {
       document.msubs.genr.value = getRandomBytes(10);
       //alert(document.subs.genr.value);
       //alert(getRandomBytes(5));
        document.msubs.password.value = hex_sha256(document.msubs.password.value);
        document.msubs.password.value = hex_hmac_sha256(document.msubs.genr.value,document.msubs.password.value);
	    document.msubs.password.value = document.msubs.password.value + document.msubs.genr.value;
    	document.msubs.email.value = document.msubs.email.value;
        document.msubs.submit();
    }
}
function showstaffinfo(dictid,id)
{
	window.open("mod_showstaff.php?DictID=" + dictid.toString()+"&ID="+id.toString(),"self","width=700,height=600,scrollbars=yes,status=no,resizable=yes,top=150,left=150");
	return;
}
function dopdf(id)
{
	window.open("mod_pdf.php?" + id.toString(),"self","width=600,height=600,scrollbars=yes,status=no,resizable=yes,top=50,left=50");
	return;
}
function doprintpreview(id)
{
	window.open("mod_print.php?" + id.toString(),"self","width=600,height=500,scrollbars=yes,status=no,resizable=yes,top=50,left=50,menubar=yes");//toolbar=yes,
	return;
}
function dosendemail(id)
{
	window.open("mod_mailto.php?" + id.toString(),"self","width=350,height=200,scrollbars=no,status=no,resizable=no,top=50,left=50,menubar=no");//toolbar=yes,
	return;
}
function doemailcheck(field)
{
    if(field.value.length > 0)
    {
	    if(emailCheck(field.value) == false)
	    {
		    field.focus();
		    field.select();
		    return false;
	    }
    }
    return true;
}
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("Your 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("Your email 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("Your email address is missing a hostname!");
return false;
}

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

function dodatecheck(field)
{
	if(dateValid(field) == false)
	{
		alert("Your date is not correct or is in the wrong format: Please use dd/mm/YYYY.");
		field.value = '';
		field.focus();
		//field.select();
	}
}

function dateValid(objValue) 
{
	var strDate;
	var strDateArray;
	var strDay;
	var strMonth;
	var strYear;
	var intday;
	var intMonth;
	var intYear;
	var booFound = false;
	//var datefield = objName;
	//var strSeparatorArray = new Array("-"," ","/",".");
	var strSeparatorArray = new Array("/");
	var intElementNr;
	// var err = 0;
	var strMonthArray = new Array(12);
	strMonthArray[0] = "Jan";
	strMonthArray[1] = "Feb";
	strMonthArray[2] = "Mar";
	strMonthArray[3] = "Apr";
	strMonthArray[4] = "May";
	strMonthArray[5] = "Jun";
	strMonthArray[6] = "Jul";
	strMonthArray[7] = "Aug";
	strMonthArray[8] = "Sep";
	strMonthArray[9] = "Oct";
	strMonthArray[10] = "Nov";
	strMonthArray[11] = "Dec";

    //strDate = objName;
	//strDate = datefield.value;
	strDate = objValue;
	if (strDate.length < 1) 
	{
		return true;
	}
	
	for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++) 
	{
		if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1) 
		{
			strDateArray = strDate.split(strSeparatorArray[intElementNr]);
			if (strDateArray.length != 3) 
			{
				err = 1;
				return false;
			}
			else 
			{
				strDay = strDateArray[1];//strDateArray[0]; edited for Ghana date format
				strMonth = strDateArray[0];//strDateArray[1];
				strYear = strDateArray[2];
			}
			booFound = true;
		}
	}
    if(booFound == true)
    {
        if(strDay.length != 2)
            return false;
        if(strMonth.length != 2)
            return false;
        if(strYear.length != 4)
            return false;
    }

	if (booFound == false) 
	{
		if (strDate.length > 5) 
		{
			strDay = strDate.substr(0, 2);
			strMonth = strDate.substr(2, 2);
			strYear = strDate.substr(4);
		}
		return false;
	}
	//Adjustment for short years entered
	if (strYear.length == 2) 
	{
		strYear = '20' + strYear;
	}
	strTemp = strDay;
	strDay = strMonth;
	strMonth = strTemp;
	intday = parseInt(strDay, 10);
	if (isNaN(intday)) 
	{
		err = 2;
		return false;
	}
	intMonth = parseInt(strMonth, 10);
	if (isNaN(intMonth)) 
	{
		/*for (i = 0;i<12;i++) 
		{
			if (strMonth.toUpperCase() == strMonthArray[i].toUpperCase()) 
			{
				intMonth = i+1;
				strMonth = strMonthArray[i];
				i = 12;
			}
		}*/
		if (isNaN(intMonth)) 
		{
			err = 3;
			return false;
		}
	}
	intYear = parseInt(strYear, 10);
	if (isNaN(intYear)) 
	{
		err = 4;
		return false;
	}
	if (intMonth>12 || intMonth<1) 
	{
		err = 5;
		return false;
	}
	if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1)) 
	{
		err = 6;
		return false;
	}
	if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) 
	{
		err = 7;
		return false;
	}
	if (intMonth == 2) 
	{        				
		if (intday < 1) 
		{
			err = 8;
			return false;
		}
		if (LeapYear(intYear) == true) 
		{
			if (intday > 29) 
			{
				err = 9;
				return false;
			}
		}
		else 
		{
			if (intday > 28) 
			{
				err = 10;
				return false;
			}
		}
	}
	return true;
}
function LeapYear(intYear) 
{
	if (intYear % 100 == 0) 
	{
		if (intYear % 400 == 0) 
		{ 
			return true; 
		}
	}
	else 
	{
		if ((intYear % 4) == 0) 
		{ 
			return true; 
		}
	}
	return false;
}
function linkover(obj)
{
	obj.style.textDecorationUnderline = true;
	return;
}
function linkoff(obj)
{
    obj.style.textDecorationUnderline = false;
    return;
}