function checkFields()	{

firstName 	=	document.getElementById('firstName').value; 
surname		=	document.getElementById('surname').value;
email		=	document.getElementById('email').value;
country		=	document.getElementById('country').value;


//check email 
if( (email.lastIndexOf(".") > 2) && (email.indexOf("@") > 0) &&
(email.lastIndexOf(".") > (email.indexOf("@")+1)) && (email.indexOf("@") == email.lastIndexOf("@")) )
	isValidEmail = true;
else
	isValidEmail = false;
	
if( firstName == ''|| surname == ''|| country == '0' || email == '')	{ 
	alert('All fields are compulsory.'); 
	return false;
}
else if ( !isValidEmail )	{
	alert('Please enter a valid email')
	return false;
}
else
	return true;


}