<!--
var alphabet = "abcdefghijklmnopqrstuvwxyz";
var numeric  = "0123456789";

function isValidwithBag(name,Bag)
{
	var i;
	name = name.toLowerCase();
	for(i=0;i<name.length;++i)
		if (Bag.indexOf(name.charAt(i)) == -1) 
			return false;
	return true;
}		

function isEmpty(s)
{
	// if the string is null or having the length of zero
	// the function will return true
	return((s==null) || (s.length==0));
}

function isWhitespace(s)
{
	// 	Check if s is empty

	if (isEmpty(s)) return true;	

	// Checks for whitespace. If there is atleast a non-whitespace character
	// the function will return false.

	var spaces = " \n\t\r"
	var i;
	for(i=0;i<s.length;++i)
		if (spaces.indexOf(s.charAt(i)) == -1) 
			return false;
	return true;
}

function isLogin(s)
{
	if (s.length == 0)
	{
		alert("Please enter your Username");
		return false;
	}

	if (!isValidwithBag(s,alphabet + numeric + "-._"))

	{
		alert("Login id should contain only the characters from alphabet, numbers and '-._'");
		return false;
	}
	if (!isValidwithBag(s.charAt(s.length-1),alphabet + numeric))
	{
		alert("Login id should end with an alphanumeric characters.");
		return false;
	}
	if (!isValidwithBag(s.charAt(0),alphabet + numeric))
	{
		alert("Login id should start with an alphanumeric characters.");
		return false;
	}
	return true;
}

function isPassword(s)
{
	if (s.length < 5)
	{
		alert("Min. length of password is 5.");
		return false;
	}

	if (isWhitespace(s))
	{
		alert("Please enter the password without spaces.");
		return false;
	}
	return true;
}


function isEmail(s)
{
	var i = 1,Length = s.length,result;

	while((i<Length) && (s.charAt(i) != '@')) i++;
	
	if ((i == Length) || (s.charAt(i) != '@'))
	{
		alert("Email address don\'t have the character @ after the login name.");
		return false;
	}
	
	i+=2;
	
	while((i<Length) && (s.charAt(i) != '.')) i++;

	if ((i == Length) || (s.charAt(i) != '.'))
	{
		alert("Email address don\'t have the character . after the domain name.");
		return false;
	}

	if (i+1 >= Length)
	{
		alert("Email address should have atleast one character after . ");
		return false;
	}
	
	return true;
}


//-->