var classname_validate_passed = "";
var classname_validate_failed = "failed-validation";
	
	function clear_fail(field_id)
	{
		document.getElementById(field_id).className = classname_validate_passed;
	}
	
	function validate_form()
	{
		validation_message = '';
		// FULL NAME
		if (document.getElementById('fullName').value == '')
		{
			document.getElementById('fullName').className = classname_validate_failed;
			validation_message = validation_message  + " You have not entered your Name. \n";
		}
		else
			document.getElementById('fullName').className = classname_validate_passed;
		
		// EMAIL
		if (document.getElementById('email').value == '')
		{
			document.getElementById('email').className = classname_validate_failed;
			validation_message = validation_message  + " You have not entered your Email Address. \n";
		}
		else
			document.getElementById('email').className = classname_validate_passed;
		
		// MESSAGE
		if (document.getElementById('message').value == '')
		{
			document.getElementById('message').className = classname_validate_failed;
			validation_message = validation_message  + " You have not entered your Message. \n";
		}
		else
			document.getElementById('message').className = classname_validate_passed;
	
		if (validation_message != '') 
		{
			alert(validation_message);
			return false;
		}
		else
			return true;
	}