function validateForm_contact() {
	var element;
	var emptyFields	= 0;

	var falseColor		= "#dc1f26";
	var falseTextColor	= "#ffffff";
	var trueColor		= "#ffffff";
	var trueTextColor	= "#0f6304";

	element = document.getElementById('reactie_contact_achternaam'); 			if (!validatePresent(element, true)) { emptyFields += 1; element.style.backgroundColor = falseColor; element.style.color = falseTextColor;  } else { element.style.backgroundColor = trueColor; element.style.color = trueTextColor;  }
	element = document.getElementById('reactie_overig_email'); 					if (!validatePresent(element, true)) { emptyFields += 1; element.style.backgroundColor = falseColor; element.style.color = falseTextColor;  } else { element.style.backgroundColor = trueColor; element.style.color = trueTextColor;  }

	if (emptyFields >= 1) {
		document.getElementById('alertMessage_contact').innerHTML = '<strong style="color:#dc1f26;">LET OP</strong><br />U heeft &eacute;&eacute;n of meerdere velden niet correct ingevuld. Probeer het nogmaals.';
	}
	return (emptyFields == 0);
};