function checkEmail(strEmail) {
		var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (!filter.test(strEmail)) {
			return false;
		}
		return true;
	}

	
	function validateContactUs() {

		if (document.getElementById('frmFName').value == '')	{
			document.getElementById('frmFName').focus();
			alert('Please enter your first name');
			return false;
		}

		if (document.getElementById('frmSName').value == '')	{
			document.getElementById('frmSName').focus();
			alert('Please enter your surname');
			return false;
		}

		if (!checkEmail(document.getElementById('frmEmail').value))	{
			document.getElementById('frmEmail').focus();
			alert('Please enter a valid email address');
			return false;
		}

		if (document.getElementById('frmMessage').value == '')	{
			document.getElementById('frmMessage').focus();
			alert('Please enter your message');
			return false;
		}

		if (document.getElementById('frmCAPTCHA').value == '')	{
			document.getElementById('frmCAPTCHA').focus();
			alert('Please enter the security code');
			return false;
		}


		document.getElementById('frmContactUs').submit();
		return false;
	}