/***************************	Validating Email	***************************/

function emailCheck (emailStr) {

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("Email address seems incorrect (check @ and .'s)")

	return false

}

var user=matchArray[1]

var domain=matchArray[2]

if (user.match(userPat)==null) {

    alert("The username doesn't seem to be valid.")

    return false

}

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

}

var domainArray=domain.match(domainPat)

if (domainArray==null) {

	alert("The domain name doesn't seem to be valid.")

    return false

}

var atomPat=new RegExp(atom,"g")

var domArr=domain.match(atomPat)

var len=domArr.length

if (domArr[domArr.length-1].length<2 || 

    domArr[domArr.length-1].length>4) {

   alert("Email address must end in a valid domain, or two letter country.")

   return false

}

if (len<2) {

   var errStr="Email address is missing a hostname!"

   alert(errStr)

   return false

}



   var str=emailStr; 

   if (emailStr.indexOf(" ")>=0)

		{

		alert ("Blank space not allowed inside email!");

		return false;

		}

	

		if (emailStr.indexOf("@",1) == -1)

		{

			alert("Invalid E-Mail address");

			return(false);

		}

		if (emailStr.indexOf("@") == 0)

		{

			alert("Invalid E-Mail address");

			return(false);

		}

		if (emailStr.indexOf(".",5) == -1)

		{

			alert("Invalid E-Mail address");

			return(false);

		}

		if (emailStr.indexOf(".") == 0)

		{

			alert("Invalid E-Mail address");

			return(false);

		}

		

		if ((emailStr.lastIndexOf(".")) -(emailStr.indexOf("@"))<3 )

		{

		

			alert("Invalid E-Mail address");

			return(false);

		}

		

		if ((emailStr.length)-(emailStr.indexOf("."))<2)

		{

			alert("Invalid E-Mail address");

			return(false);

		}



		var posat=str.indexOf("@");

		var posdot=str.indexOf(".");

		var rposdot=str.lastIndexOf(".");

		//alert(posat); 

		//alert(posdot);

		//alert(rposdot);

		

		

		if(rposdot==posdot)

		if((posdot < posat) || (posdot-posat < 3))

		{

		//alert("needs at last 3 cars between @ and . sign");

		alert("Invalid E-Mail address");

		return false;

		}

		

		if(str.charAt(str.length-1)==".")

		{

		//alert("cannot end with .");

		alert("Invalid E-Mail address");

		return false;

		}

		

		if(str.charAt(str.length-1)=="@")

		{

		//alert("cannot end with @");

		alert("Invalid E-Mail address");

		return false;

		}

		

		var j=0;

		for( var i=0;i<str.length;i++)

		{

		if(str.charAt(i) == "@")

		j++;

		}

		if(j > 1)

		{

		//alert("only one @ sign allowed");

		alert("Invalid E-Mail address");

		return false;

		}



return true;

}



function validate_email(email,mandatory)

{

	if (mandatory==1 && email.value=='')

	{

		alert("Please specify Email ID");

		email.focus();

		return (false);

	}

	if (email.value!='' && !emailCheck (email.value) )

	{

		email.focus();

		email.select();

		return (false);

	}

	return(true);

}

/***************************	/Validating Email	***************************/





/***************************	Validating Text	***************************/

function validate_text(data,mandatory,errmsg)

{

	if (mandatory==1 && data.value=='')

	{

		alert(errmsg);

		data.focus();

		data.select();

		return (false);

	}

	

	if (data.value!='' && (data.value.replace(/^\s+|\s+$/, '').length<=0) )

	{

		alert(errmsg);

		data.focus();

		data.select();

		return (false);

	}

	return(true);

}

/***************************	/Validating Text	***************************/





/***************************	Validating Numeric	***************************/

function validate_numeric(data,mandatory,errmsg)

{

	if (mandatory==1 && data.value=='')

	{

		alert(errmsg);

		data.focus();

		return (false);

	}

	if (data.value!='' && (isNaN(data.value) || (data.value<0) || (data.value.replace(/^\s+|\s+$/, '').length<=0)) )

	{

		alert(errmsg);

		data.focus();

		data.select();

		return (false);

	}

	return(true);

}

/***************************	/Validating Numeric	***************************/





/***************************	Validating Integer	***************************/

function validate_integer(data,mandatory,errmsg)

{

	if (mandatory==1 && data.value=='')

	{

		alert(errmsg);

		data.focus();

		return (false);

	}

	if (   data.value!='' && (   isNaN(data.value) || (data.value<0) || (data.value.replace(/^\s+|\s+$/, '').length<=0) || (data.value.indexOf('.')!=-1)   )   )

	{

		alert(errmsg);

		data.focus();

		data.select();

		return (false);

	}

	return(true);

}

/***************************	/Validating Integer	***************************/





/***************************	Check Minimum Length	***************************/

function validate_min_length(data,len,errmsg)

{

	if (   data.value!='' && (data.value.length<len) )

	{

		alert(errmsg);

		data.focus();

		data.select();

		return (false);

	}

	return(true);

}

/***************************	/Check Minimum Length	***************************/





/***************************	Check Maximum Length	***************************/

function validate_max_length(data,len,errmsg)

{

	if (   data.value!='' && (data.value.length>len) )

	{

		alert(errmsg);

		data.focus();

		data.select();

		return (false);

	}

	return(true);

}

/***************************	/Check Maximum Length	***************************/







/***************************	Phone number validation	***************************/



/**

 * DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)

 */



// Declaring required variables

var digits = "0123456789";

// non-digit characters which are allowed in phone numbers

var phoneNumberDelimiters = "()- ";

// characters which are allowed in international phone numbers

// (a leading + is OK)

var validWorldPhoneChars = phoneNumberDelimiters + "+";

// Minimum no of digits in an international phone no.

var minDigitsInIPhoneNumber = 10;



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++)

    {   

        // Check that current character isn't whitespace.

        var c = s.charAt(i);

        if (bag.indexOf(c) == -1) returnString += c;

    }

    return returnString;

}



function checkInternationalPhone(strPhone){

s=stripCharsInBag(strPhone,validWorldPhoneChars);

return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);

}



function validate_phone_no(data,mandatory,errmsg){

	var Phone=data

	

	if (mandatory==1 && data.value=='')

	{

		alert(errmsg);

		data.focus();

		return (false);

	}

	if (   data.value!='' && checkInternationalPhone(Phone.value)==false){

		alert(errmsg);

		Phone.focus();

		Phone.select();

		return false

	}

	return true

 }

/***************************	/Phone number validation	***************************/



/***************************	Credit Card Validation	******************************/

function validateCreditCard(s) {

var v = "0123456789";

var w = "";

for (var i=0; i < s.length; i++) {

x = s.charAt(i);

if (v.indexOf(x,0) != -1)

w += x;

}

var j = w.length / 2;

if (j < 6.5 || j > 8 || j == 7) return false;

var k = Math.floor(j);

var m = Math.ceil(j) - k;

var c = 0;

for (var i=0; i<k; i++) {

a = w.charAt(i*2+m) * 2;

c += a > 9 ? Math.floor(a/10 + a%10) : a;

}

for (var i=0; i<k+m; i++) c += w.charAt(i*2+1-m) * 1;

return (c%10 == 0);

}



function validate_credit_card(data,mandatory,errmsg)

{

	if (mandatory==1 && data.value=='')

	{

		alert(errmsg);

		data.focus();

		return (false);

	}

	

	if (data.value!='' && (validateCreditCard(data.value)==false) )

	{

		alert(errmsg);

		data.focus();

		data.select();

		return (false);

	}

	return(true);

}



/***************************	Credit Card Validation	******************************/















//Manual...............................



// Email Verification

		//return validate_email(document.FormName.FieldName,0);	//2nd arg=if mandatory then 1 else 0

// Text Verification

		//return validate_text(document.FormName.FieldName,0,"Message..");	//2nd arg=if mandatory then 1 else 0

// Min Length Verification

		//return validate_min_length(document.FormName.FieldName,MinLen,"Message..");	//2nd arg=if mandatory then 1 else 0

// Max Length Verification

		//return validate_max_length(document.FormName.FieldName,MaxLen,"Message..");	//2nd arg=if mandatory then 1 else 0

// Numeric Verification

		//return validate_numeric(document.FormName.FieldName,0,"Message..");	//2nd arg=if mandatory then 1 else 0

// Integer Verification

		//return validate_integer(document.FormName.FieldName,0,"Message..");	//2nd arg=if mandatory then 1 else 0

// Phone number Verification

		//return validate_phone_no(document.FormName.FieldName,0,"Message..");	//2nd arg=if mandatory then 1 else 0

// Credit Card Verification

		//return validate_credit_card(document.FormName.FieldName,0,"Message..");	//2nd arg=if mandatory then 1 else 0