function checkSuccess() {
	var URL = document.URL;
	var URLlength = URL.length;
	var last_char = URL.charAt(URLlength-1);
	if (last_char == '1') {
		document.getElementById('show').innerHTML = "Contact processed successfully!";
	}
	else if (last_char == '0') {
		document.getElementById('show').innerHTML = 'There was a problem with sending your details - please try again!';
	}
	else if (last_char == '2') {
		document.getElementById('show').innerHTML = 'Details not sent - Please use a valid email address!';
		alert("Please use a valid email address!");
	}
}