var xmlHttp;
	
	function createXMLHttpRequest() {
		if ( window.ActiveXObject ) {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		} else if ( window.XMLHttpRequest ) {
			xmlHttp = new XMLHttpRequest();
		}
	}
	
	function changepic(direction, foto_number, product) {
		createXMLHttpRequest();
		xmlHttp.onreadystatechange = outputShowFoto;
				
		xmlHttp.onreadystatechange = function () {
			if (xmlHttp.readyState == 4) {
				outputShowFoto(product);
			}
		};
		
		xmlHttp.open("GET","ajax/ajax_slide_foto.php?direction=" + direction + "&number=" + foto_number + "&product=" + product, true);
		xmlHttp.send(null);
	}
	
	function outputShowFoto(product) {
		if ( xmlHttp.readyState == 4 ) {
			if ( xmlHttp.status == 200 ) {
				document.getElementById(product).innerHTML = xmlHttp.responseText;
				initLightbox();
			}
		}
	}

	function check_contact() {
		var get_naam = document.getElementById("naam").value;
		var get_bedrijf = document.getElementById("bedrijf").value;
		var get_straat = document.getElementById("straat").value;
		var get_woonplaats = document.getElementById("woonplaats").value;
		var get_tel = document.getElementById("telefoon").value;
		var get_email = document.getElementById("email").value;
		var get_bericht = document.getElementById("bericht").value;

		createXMLHttpRequest();
		xmlHttp.onreadystatechange = outputContact;
		xmlHttp.open("GET","ajax/ajax_check_contact.php?naam=" + get_naam + "&bedrijf=" + get_bedrijf + "&straat=" + get_straat + "&woonplaats=" + get_woonplaats + "&tel=" + get_tel + "&email=" + get_email + "&bericht=" + encodeURI(get_bericht), true);
		xmlHttp.send(null);
	}

	function outputContact() {
		if ( xmlHttp.readyState == 4 ) {
			if ( xmlHttp.status == 200 ) {
				if ( xmlHttp.responseText == 'email' ) {
					document.getElementById("mail_errorbox").style.visibility = "visible";
					document.getElementById("mail_errorbox").innerHTML = '<em>* Gelieve uw e-mail adres in te vullen.</em>';
				} else if ( xmlHttp.responseText == 'email2' ) {
					document.getElementById("mail_errorbox").style.visibility = "visible";
					document.getElementById("mail_errorbox").innerHTML = '<em>* Gelieve een geldig email adres in te vullen.</em>';
				} else if ( xmlHttp.responseText == 'naam' ) {
					document.getElementById("mail_errorbox").style.visibility = "visible";
					document.getElementById("mail_errorbox").innerHTML = '<em>* Gelieve uw naam in te vullen.</em>';
				} else if ( xmlHttp.responseText == 'bericht' ) {
					document.getElementById("mail_errorbox").style.visibility = "visible";
					document.getElementById("mail_errorbox").innerHTML = '<em>* Gelieve een bericht in te geven.</em>';
				} else {
					document.getElementById("mail_errorbox").innerHTML = '<em>* Uw e-mail werd verzonden.</em>';
				}
			}
		}
	}