/*

BIAS Validation Library


To use the library put the following line in the HEAD section (both ASP 3.0 and ASP.NET)

<script src="http://www.thedoor.com.au/pub/lib/BIAS/ValidateEmail.js" type="text/javascript"></script>



ValidateDate(msg, dateString) -- validate a date string, should be strictly in dd/mm/yyyy format
	Alert error messages will be displayed, having "<msg> -- error description" message
	It is recommended to use field description in msg only.

ValidatePostcode(msg, postcodeString) -- validate a postcode, it's allowed to be in numeric format only.
	Alert error messages will be displayed, having "<msg> -- error description" message
	It is recommended to use field description in msg only.

ValidateEmail(msg, emailString) -- validate an email address
	Alert error messages will be displayed, having "<msg> -- error description" message
	It is recommended to use field description in msg only.

EmailClientValidationFunction(source, arguments) -- ASP.NET 2.0 only.
        Just place a CustomValidator on your form, set ClientScript to Enabled and type in 
	EmailClientValidationFunction in ClientValidationFunction attribute.

*/


/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

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;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function ValidateDate(msg, dtStr)
{
	if (dtStr=="") return true;
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert(msg+" -- The date format should be : dd/mm/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert(msg+" -- Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert(msg+" -- Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert(msg+" -- Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert(msg+" -- Please enter a valid date")
		return false
	}
        return true
}

function ValidatePostcode(msg, postcodeStr)
{
	var valid = "0123456789";
	for (var i=0; i < postcodeStr.length; i++) 
		{
			var temp = "" + postcodeStr.substring(i, i+1);
			if (valid.indexOf(temp) == "-1") {
				alert(msg + " -- must be a number");
				return false;
			}
		}
	return true;
}

function ValidateMobile(msg, mobileStr)
{
	var valid = "0123456789";
	for (var i=0; i < mobileStr.length; i++) 
		{
			var temp = "" + mobileStr.substring(i, i+1);
			if (valid.indexOf(temp) == "-1") {
				alert(msg + " -- must be a number");
				return false;
			}
		}
        if (mobileStr.length!=10)
                {
                        alert(msg+" -- must be 04xxxxxxxx");
			return false;
                }
        if (mobileStr.substring(0, 1)!="0" || mobileStr.substring(1, 2)!="4")
                {
        		alert(msg+" -- must be 04xxxxxxxx");
			return false;
		}
	return true;
}

// A client side email validation function for ASP 2.0
function ValidateEmail(msg, emailStr)
    {
        var checkTLD=1;
        var knownDomsPat=/^(to|tv|au|com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
        var emailPat=/^(.+)@(.+)$/;
        var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
        var validChars="\[^\\s" + specialChars + "\]";
        var quotedUser="(\"[^\"]*\")";
        var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
        var atom=validChars + '+';
        var word="(" + atom + "|" + quotedUser + ")";
        var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
        var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
        var matchArray=emailStr.match(emailPat);
        if (matchArray==null) {
            alert(msg+" -- Email address is empty or incorrect");
            return false;
        }
        var user=matchArray[1];
        var domain=matchArray[2];
      
        for (i=0; i<user.length; i++) {
            if (user.charCodeAt(i)>127) {
                alert(msg+" -- This email contains invalid characters.");
                return false;
            }
        }
        for (i=0; i<domain.length; i++) {
            if (domain.charCodeAt(i)>127) {
                alert(msg+" -- This domain name of the email contains invalid characters.");
                return false;
            }
        }
        if (user.match(userPat)==null) {
            alert(msg+" -- The username of the email doesn't seem to be valid.");
            return false;
        }
        var IPArray=domain.match(ipDomainPat);
        if (IPArray!=null) {
            for (var i=1;i<=4;i++) {
                if (IPArray[i]>255) {
                    alert(msg+" -- Destination IP address of the email is invalid!");
                    return false;
                }
            }
            return true;
        }
        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(msg+" -- The domain name of the email does not seem to be valid.");
                return false;
            }
        }
        if (checkTLD && domArr[domArr.length-1].length!=2 && 
            domArr[domArr.length-1].search(knownDomsPat)==-1) {
            alert(msg+" -- The email address must end in a well-known domain or two letter " + "country.");
            return false;
        }
        if (len<2) {
            alert(msg+" -- The email address is missing a hostname!");
            return false;
        }
        return true;
    }

// To attach this script to any <HEAD> of ASP.NET file using <SCRIPT HREF>
// And then use "ValidateEmail" in a custom client-side validate function of a CustomValidate server control
// The control will receive the error message automatically
function EmailClientValidationFunction(source, arguments)
    {
	var emailStr = arguments.Value;
        var checkTLD=1;
        var knownDomsPat=/^(to|tv|au|com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
        var emailPat=/^(.+)@(.+)$/;
        var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
        var validChars="\[^\\s" + specialChars + "\]";
        var quotedUser="(\"[^\"]*\")";
        var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
        var atom=validChars + '+';
        var word="(" + atom + "|" + quotedUser + ")";
        var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
        var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
        var matchArray=emailStr.match(emailPat);
        if (matchArray==null) {
            source.innerText="Email address is empty or incorrect";
	    arguments.IsValid=false;
	    return;
        }
        var user=matchArray[1];
        var domain=matchArray[2];
      
        for (i=0; i<user.length; i++) {
            if (user.charCodeAt(i)>127) {
	            source.innerText="This email contains invalid characters";
		    arguments.IsValid=false;
	    	    return;
            }
        }
        for (i=0; i<domain.length; i++) {
            if (domain.charCodeAt(i)>127) {
	            source.innerText="This domain name of the email contains invalid characters";
		    arguments.IsValid=false;
	    	    return;
            }
        }
        if (user.match(userPat)==null) {
	            source.innerText="The username of the email doesn't seem to be valid";
		    arguments.IsValid=false;
	    	    return;
        }
        var IPArray=domain.match(ipDomainPat);
        if (IPArray!=null) {
            for (var i=1;i<=4;i++) {
                if (IPArray[i]>255) {
	            source.innerText="Destination IP address of the email is invalid";
		    arguments.IsValid=false;
	    	    return;
                }
            }
            return true;
        }
        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) {
	            source.innerText="The domain name of the email does not seem to be valid";
		    arguments.IsValid=false;
	    	    return;
            }
        }
        if (checkTLD && domArr[domArr.length-1].length!=2 && 
            domArr[domArr.length-1].search(knownDomsPat)==-1) {
	            source.innerText="The email address must end in a well-known domain or two letter country";
		    arguments.IsValid=false;
	    	    return;
        }
        if (len<2) {
	            source.innerText="The email address is missing a hostname";
		    arguments.IsValid=false;
	    	    return;
        }
	arguments.IsValid=true;
        return;
    }