function validate_email()
{
	var email = document.airtel_form.txt_email.value;
	if (email==null||email=="")
	{
		alert("Email is required!");
		document.airtel_form.txt_email.focus();	
		return false;
	}
	
	if(checkEmail(document.airtel_form.txt_email) == false)
		return false;
	
		return true;
}
function validate_name()
{
	name = document.airtel_form.txt_name.value
	if (name==null||name=="")
	{
		alert("Name is required!");
		document.airtel_form.txt_name.focus();	
		return false;
	}
	if(checkName(document.airtel_form.txt_name) == false)
		return false;
	
	return true;	
}

function validate_phone()
{
	var phone = document.airtel_form.txt_phone.value;
	
		if (phone==null||phone=="")
		{
			alert("Phone number is required!");	
			document.airtel_form.txt_phone.focus();
			return false;
		}
		if (phone.length < 10)
		{
			alert("Phone number must be 10 digits");
			document.airtel_form.txt_phone.focus();
			return false;
		}
		if(checkPhone(document.airtel_form.txt_phone) == false)
		{
			return false;
		}	
		
			return true;
}

function validate_city()
{
	var city = document.airtel_form.city.value;
	
	if (city==null || city=="" || city == "select")
	{
		alert("Select city!");
		document.airtel_form.city.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function submit_form()
{		
		if (validate_name()==false)
		{return false;}
		if (validate_phone()==false)
		{return false;}
		if (validate_email()==false)
		{return false;}
		if (validate_city()==false)
		{return false;}
		
		document.airtel_form.submit();
}
function validateNonNumber (evt) {
	var keyCode = evt.which ? evt.which : evt.keyCode;
	return keyCode < '0'.charCodeAt() || keyCode > '9'.charCodeAt();
}
function isNumberKey(evt)
{
	var charCode = (evt.which) ? evt.which : evt.keyCode;
	if (charCode > 31 && (charCode < 48 || charCode > 57))
	{
		alert ("Only Numbers.")
		return false;
	}

	return true;
}