// JavaScript Document

function IsNumeric(s)

{

	var strValidChars = "0123456789.-";

	var strChar;

	var blnResult = true;

	

	if (s.length == 0) return false;

	

	//  test strString consists of valid characters listed above

	for (i = 0; i < s.length && blnResult == true; i++)

	{

		strChar = s.charAt(i);

		if (strValidChars.indexOf(strChar) == -1)

		{

			blnResult = false;

		}

	}

	return blnResult;

}

function IsChar(strString)

{

	var strValidChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ. ";

	var strChar;

	var blnResult = true;

	

	if (strString.length == 0) return false;

	

	//  test strString consists of valid characters listed above

	for (i = 0; i < strString.length && blnResult == true; i++)

	{

		strChar = strString.charAt(i);

		if (strValidChars.indexOf(strChar) == -1)

		{

			blnResult = false;

		}

	}

	return blnResult;

}

function checkName()

{

	var nm=document.f1.Name.value;

	if(nm=="")

	{

		return "Name cannot be left blank.\n";	

	}

	else

	{

		if(!IsChar(nm))

		{

			return "Name should consists of alphabets only.\n";	

		}

		else

		{

			return "";

		}

	}

}

function checkEmail()

{

	var em=document.f1.Email.value;

	if(em=="")

	{

		return "Email cannot be left blank.\n";

	}

	else

	{

		if(em.indexOf("@")==-1 || em.indexOf(".")==-1)

		{

			return "Invalid Email address. Please provide valid email address.\n";	

		}

		else

		{

			return "";

		}

	}

}

function checkMobile()

{

	var m=document.f1.Telephone.value;

	if(m=="")

		return "Mobile No. cannot be left blank.\n";

	else

	{

		if(!IsNumeric(m))

			return "Mobile No. must contain digits only.\n";

		else

			return "";

	}

}

function bdate()

{

	var e="";

	var d=document.f1.date.value;

	var m=document.f1.month.value;

	var y=document.f1.year.value;

	if(y%100==0)

	{

		if(y%400==0)

			febFlag=1;

		else

			febFlag=0;

	}

	else

	{

		if(y%4==0)

			febFlag=1;

		else

			febFlag=0;	

	}

	if(m==1 || m==3 || m==5 || m==7 || m==8 || m==10 || m==12)

		days=31;

	else

		days=30;

	if(m==2 && febFlag==1)

		days=29;

	if(m==2 && febFlag==0)

		days=28;

	if(d!="" && m!="" && y!="")

	{

		if(d>days)

			e="Invalid date in Date of Birth. Please check it.\n";

	}

	else

	{

		e="Date of Birth cannot be left empty.\n";

	}

	return e;

}

function checkAddress()

{

	var a=document.f1.Address.value;

	if(a=="")

		return "Address cannot be left empty.\n";

	else

		return "";

}

function checkPlan()

{

	var p=document.f1.Plan.value;

	if(p=="")

		return "Please select a Membership Plan.\n";

	else

		return "";

}

function checkPayMethod()

{

	var p=document.f1.PayMethod.value;

	if(p=="")

		return "Please select your Method of Payment.\n";

	else

		return "";

}

function checkCaptcha()

{

	var c=document.f1.code.value;

	if(c=="")

		return "Please fill in the Secure Code.\n";

	else

		return "";

}

function chkForm()

{

	var msg="";

	msg += checkName();

	msg += checkEmail();

	msg += checkMobile();

	msg += bdate();

	msg += checkAddress();

	msg += checkPlan();

	msg += checkPayMethod();

	msg += checkCaptcha();

	if(msg != "")

	{

		var m="Please correct the following errors to continue:\n\n";

		m += msg;

		alert(m);

		return false;

	}

	return true;

}