// To open a popup window

function MM_openBrWindow(theURL,winName,features) {

  window.open(theURL,winName,features);

}



// Newsletter Subscription Form

function Newsletter() {

  	mailid = document.newsMail.email

	if (mailid.value == '')

	{

		alert("Please enter E-mail Id");

		mailid.focus()

		return false

	}

	else if (mailid.value.indexOf("@")==-1 || mailid.value.indexOf(".")==-1){

		alert("Invalid E-mail ID")

		mailid.focus()	   

		return false

	}

}



// Feedback form validation
function Feedback() {

	firstName = document.fbForm.txtFirstname
	if (firstName.value == "" || !isNaN(firstName.value))
	{
		alert("Please enter your first name");
		firstName.focus()
		return false		
	}

	lastName = document.fbForm.txtlastname
	if (lastName.value == "" || !isNaN(lastName.value))
	{
		alert("Please enter your last name");
		lastName.focus()
		return false		
	}




	mailid = document.fbForm.txtemail
	if (mailid.value == '')
	{
		alert("Please enter E-mail Id");
		mailid.focus()
		return false
	}
	else if (mailid.value.indexOf("@")==-1 || mailid.value.indexOf(".")==-1){
		alert("Invalid E-mail ID")
		mailid.focus()	   
		return false
	}

	age = document.fbForm.cmbAgeRange
	if (age.options[age.selectedIndex].value == "")
	{
		alert("Please select your age group");
	age.focus()
	return false		
	}	

	sportsAct = document.fbForm.txtsports
	if (sportsAct.value != "" && !isNaN(sportsAct.value))
	{
		alert("Please enter Sports Activities");
		sportsAct.focus()
		return false		
	}

	comments = document.fbForm.txtComments
	if (comments.value == "" || !isNaN(comments.value))
	{
		alert("Please add your comments");
		comments.focus()
		return false		
	}	
	if (document.fbForm.uword.value=="" )
	{
	alert('Enter the code as it is shown');
	document.fbForm.uword.focus();
	return false;
	}
	return jcap();
	
	
}



// Appointments form validation



function Appointment()



{



if (document.frmAppointment.txtFirstName.value=="" || !isNaN(document.frmAppointment.txtFirstName.value))



	{



	alert('Enter FirstName');



	document.frmAppointment.txtFirstName.focus();



	return false;



	}



if (document.frmAppointment.txtSurname.value=="" || !isNaN(document.frmAppointment.txtSurname.value))



	{



	alert('Enter Surname');



	document.frmAppointment.txtSurname.focus();



	return false;



	}



if (document.frmAppointment.txtHomePhoneNumber.value=="")



	{



	alert('Enter Home Phone No.');



	document.frmAppointment.txtHomePhoneNumber.focus();



	return false;



	}







	



if (document.frmAppointment.txtEmailAddress.value=="")



	{



	alert('Enter Email Address');



	document.frmAppointment.txtEmailAddress.focus();



	return false;



	}



	else if (document.frmAppointment.txtEmailAddress.value.indexOf("@")==-1 || document.frmAppointment.txtEmailAddress.value.indexOf(".")==-1){



		alert("Invalid E-mail ID")



		document.frmAppointment.txtEmailAddress.focus()	   



		return false



	}	



}



// BMI Calculator

function converttometers(ht)

{

    return (ht/100);

}

function calculatebmi(ht,wt)

{

return (wt/Math.pow(ht,2));

}

function btnCalcbmi()

{

if (document.frmbmi.txtheight.value != '')

{

	var ht=converttometers(document.frmbmi.txtheight.value);

	var wt=document.frmbmi.txtweight.value;

	var bmi=Math.round(calculatebmi(ht,wt));

	document.frmbmi.txtbmi.value=parseInt(bmi);

	

	if (parseInt(bmi) <19) 

document.frmbmi.comment.value = "Underweight";

if (parseInt(bmi) >=19 && parseInt(bmi) <=25) 

document.frmbmi.comment.value = "Desirable";

if (parseInt(bmi) >=26 && parseInt(bmi) <=29) 

document.frmbmi.comment.value = "Prone to health risks";

if (parseInt(bmi) >=30 && parseInt(bmi) <=40) 

document.frmbmi.comment.value = "Obese";

if (parseInt(bmi) >40) 

document.frmbmi.comment.value = "Extremely obese";

	

}

else 

{

	alert("Please enter your weight and height");

	return false;

}

}