function validateEmail(strQuestion, strEmail, strName)
	{
		var strError = "";
		var regex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;

		if(trim(strEmail) != "")
			if(!regex.test(strEmail))
				strError += '<li>E-mail adres is ongeldig.</li>';

		if(trim(strQuestion) == "")
			strError += '<li>Een vraag of opmerking mag niet leeg zijn.</li>';

		if(trim(strName) == "")
			strError += '<li>Uw naam mag niet leeg zijn.</li>';

		if(trim(strError) != '')
		{
			var container = document.getElementById("divError");
			container.style.display = 'block';
			container.innerHTML  = strError + '<br/>';
			var iframe = document.getElementById("contactIFrame");
			iframe.style.display = 'none';
			return false;
		}
		else
		{
			var iframe = document.getElementById("contactIFrame");
			iframe.style.display = 'block';
			var container = document.getElementById("divError");
			container.style.display = 'none';
			if(trim(document.contactForm.cSubject.value) == "")
				document.contactForm.cSubject.value = document.contactForm.cEmail.options[0].text;
		}
	}

	function setAction()
	{
		var f = new getObj("contactForm");
		f.obj.action = "http://zoeken.overzicht.nl/sendmail.php";
		f.obj.method = "post";
	}

	function trim(value)
	{
		value = value.replace(/^\s+|\s+$/,'');
		return value;
	}