function externalLinks() { 
 if (!document.getElementsByTagName) return; 
 var anchors = document.getElementsByTagName("a"); 
 for (var i=0; i<anchors.length; i++) { 
   var anchor = anchors[i]; 
   if (anchor.getAttribute("href") && 
       anchor.getAttribute("rel") == "external") 
     anchor.target = "_blank"; 
 } 
} 
window.onload = function(){
externalLinks();
}


function same()
{
	var voornaam;
	var naam;
	var firmanaam;
	var straat;
	var nummer;
	var postcode;
	var gemeente;
	var land;
	var btw;
	var telefoon;
	var gsm;
	var fax;
	var email;
	
	voornaam = document.getElementById('voornaam').value;
	naam = document.getElementById('naam').value;
	firmanaam = document.getElementById('firmanaam').value;
	straat = document.getElementById('straat').value;
	nummer = document.getElementById('nummer').value;
	postcode = document.getElementById('postcode').value;
	gemeente = document.getElementById('gemeente').value;
	land = document.getElementById('land').value;
	btw = document.getElementById('btw').value;
	telefoon = document.getElementById('telefoon').value;
	gsm = document.getElementById('gsm').value
	fax = document.getElementById('fax').value;
	email = document.getElementById('email').value;
	
	document.getElementById('avoornaam').value = voornaam;
	document.getElementById('anaam').value = naam;
	document.getElementById('afirmanaam').value = firmanaam;
	document.getElementById('astraat').value = straat;
	document.getElementById('anummer').value = nummer;
	document.getElementById('apostcode').value = postcode;
	document.getElementById('agemeente').value = gemeente;
	document.getElementById('aland').value = land;
	document.getElementById('atelefoon').value = telefoon;
	document.getElementById('abtw').value = btw;
	document.getElementById('agsm').value = gsm;
	document.getElementById('afax').value = fax;
	document.getElementById('aemail').value = email;
}



function ShowHide(div,image, src) {

	if(div == "div3" || div == "div4" || div == "div5"){
		var thisLevel = document.getElementById("div2");
		var otherLevel = document.getElementById("div1");
		otherLevel.style.display = "none"; 
		thisLevel.style.display = "none"; 
		
	}else{
		var thisLevel = document.getElementById(div); 
		var thisImage = document.getElementById(image);
		if(div == "div1"){
			var otherLevel = document.getElementById("div2");
		}else if(div == "div2"){
			var otherLevel = document.getElementById("div1");
		}

		if (thisLevel.style.display == "none") {
			thisLevel.style.display = "block";
			otherLevel.style.display = "none"; 
			thisImage.src = src;	
		} else {
			var thisLevel = document.getElementById(div); 
			thisLevel.style.display = "none"; 
			thisImage.src = src; 
		}
	}
	
} 
function ShowHidefront(div) {

	if(div == "print"){
		var thisLevel = document.getElementById("print");
		var otherLevel = document.getElementById("favo");
		var otherLevel1 = document.getElementById("vcard");
		otherLevel.style.display = "none"; 
		otherLevel1.style.display = "none";
		thisLevel.style.display = "block"; 
		
	}else if(div == "favo"){
		var thisLevel = document.getElementById("favo");
		var otherLevel = document.getElementById("print");
		var otherLevel1 = document.getElementById("vcard");
		otherLevel.style.display = "none"; 
		otherLevel1.style.display = "none";
		thisLevel.style.display = "block"; 
	}else if(div == "vcard"){
		var thisLevel = document.getElementById("vcard");
		var otherLevel = document.getElementById("print");
		var otherLevel1 = document.getElementById("favo");
		otherLevel.style.display = "none"; 
		otherLevel1.style.display = "none";
		thisLevel.style.display = "block"; 
	}else if(div == ""){
		var thisLevel = document.getElementById("vcard");
		var otherLevel = document.getElementById("print");
		var otherLevel1 = document.getElementById("favo");
		otherLevel.style.display = "none"; 
		otherLevel1.style.display = "none";
		thisLevel.style.display = "none"; 
	}
	
} 

function checkRequiredFields(input)
{

    var requiredFields = new Array("naam", "voornaam", "straat", "nummer", "postcode", "gemeente", "land", "email");

    var fieldNames = new Array("Uw naam", "Uw voornaam", "Uw straat", "Uw straatnummer", "Uw postcode", "Uw gemeente", "Uw land", "Uw e-mailadres");
    var fieldCheck   = true;
    var fieldsNeeded = "\nDe volgende velden zijn verplicht:\n\n\t";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") || (input.elements[requiredFields[fieldNum]].value == " "))
		{
            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    if (fieldCheck == true)
    {
        return true;
    }
    else
    {
        alert(fieldsNeeded);
        return false;
    }
}
function checkFieldsNews(input)
{

    var requiredFields = new Array("naam", "voornaam", "email");

    var fieldNames = new Array("Uw naam", "Uw voornaam", "Uw e-mailadres");
    var fieldCheck   = true;
    var fieldsNeeded = "\nDe volgende velden zijn verplicht:\n\n\t";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") || (input.elements[requiredFields[fieldNum]].value == " "))
		{
            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    if (fieldCheck == true)
    {
        return true;
    }
    else
    {
        alert(fieldsNeeded);
        return false;
    }
}
function formcheck(input)
{

    var requiredFields = new Array("contactpersoon",
                                   "straatnummer",
					 "postcode",
					 "gemeente",
                                   "telefoon",
                                   "email",
                                   "website", "keyword1", "keyword2", "keyword3");


    var fieldNames = new Array("Naam",
                               "Straat + nummer",
				    "Postcode",
				    "Gemeente",
                               "Telefoon",
                               "E-maiil",
                               "Website", "zoekwoord 1", "zoekwoord 3", "zoekwoord 3");

    var fieldCheck   = true;
    var fieldsNeeded = "\nDe volgende velden zijn verplicht:\n\n\t";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") ||
            (input.elements[requiredFields[fieldNum]].value == " ")) {

            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    if (fieldCheck == true)
    {
        return true;
    }
    else
    {
        alert(fieldsNeeded);
        return false;
    }
}
Image1 = new Image(334,620)
Image1.src = "../images/optiseohome.gif"

Image2 = new Image(334,620)
Image2.src = "../images/optiseogoogle.gif"

Image3 = new Image(334,620)
Image3.src = "../images/optiseoconsult.gif"

Image4 = new Image(334,620)
Image4.src = "../images/optiseoads.gif" 

Image5 = new Image(334,620)
Image5.src = "../images/optiseoonetime.gif"

Image6 = new Image(334,620)
Image6.src = "../images/optiseolifetime.gif"

Image7 = new Image(334,620)
Image7.src = "../images/optiseooplossing.gif"


function zoomoplossing() {
document.getElementById('emp').src = Image7.src; return true;
}

function zoomlifetime() {
document.getElementById('emp').src = Image6.src; return true;
}

function zoomonetime() {
document.getElementById('emp').src = Image5.src; return true;
}

function zoomads() {
document.getElementById('emp').src = Image4.src; return true;
}

function zoomconsult() {
document.getElementById('emp').src = Image3.src; return true;
}

function zoomgoogle() {
document.getElementById('emp').src = Image2.src; return true;
}

function original() {
document.getElementById('emp').src = Image1.src; return true; 
}