function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

//
// email.js
//
// javascript used to validate an email address
//
// $Id: functions.js,v 1.1.1.1 2006-01-24 20:11:15 aparent Exp $
//
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=/^([\w\.-]+)@(.+)$/;

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

    // See if "user" is valid
    if (user.match(userPat)==null) {
        // user is not 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) {
                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) {
            return false;
        }
    }

    // Exceptions: check if the domain is not one of those: hotmail, yahoo, AOL


    /* 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) {
        return false;
    }

    // Make sure there's a host name preceding the domain.
    if (len<2) {
        return false;
    }

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

// JavaScript to pop a new window
function popup(thisUrl,thisWindow,thisWidth,thisHeight,thisTop,thisLeft,scrollbar) {
		if(scrollbar==null) {
        optionString = ('width=' + thisWidth + ',height=' + thisHeight + ',top=' + thisTop + ',left=' + thisLeft + ',status=no,menubar=no,resizable=no,scrollbars=no');
		} else {
		optionString = ('width=' + thisWidth + ',height=' + thisHeight + ',top=' + thisTop + ',left=' + thisLeft + ',status=no,menubar=no,resizable=no,scrollbars='+scrollbar);
		}
        mainWin = window.open(thisUrl,thisWindow,optionString);
}

//trim trailing and leading spaces
function Trim(s)
{
  // Remove leading spaces and carriage returns

  while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))
  {
    s = s.substring(1,s.length);
  }

  // Remove trailing spaces and carriage returns

  while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))
  {
    s = s.substring(0,s.length-1);
  }
  return s;
}

function textCounter(field, countfield, maxlimit) {
	if (field.value.length > maxlimit) {
		field.value = field.value.substring(0, maxlimit);
	}
	else {
		countfield.value = maxlimit - field.value.length;
	}
}



var isNN = (navigator.appName.indexOf("Netscape")!=-1);
function autoTab(input,len, e) {
var keyCode = (isNN) ? e.which : e.keyCode;
var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46];
if(input.value.length >= len && !containsElement(filter,keyCode)) {
input.value = input.value.slice(0, len);
input.form[(getIndex(input)+1) % input.form.length].focus();
}
function containsElement(arr, ele) {
var found = false, index = 0;
while(!found && index < arr.length)
if(arr[index] == ele)
found = true;
else
index++;
return found;
}
function getIndex(input) {
var index = -1, i = 0, found = false;
while (i < input.form.length && index == -1)
if (input.form[i] == input)index = i;
else i++;
return index;
}
return true;
}


function atLeastOneCheck(elements) {
    var chks = elements
    var hasChecked = false;
    for (var i=0;i<chks.length;i++){
        if (chks[i].checked){
        hasChecked = true;
            break;
        }
    }
    if (hasChecked){
        return true;
    }
    return false;
}