function checkWinActieForm() {

 errorMessage = 'Uw inschrijving kan niet worden verwerkt om de volgende reden(en):\n\n';
 errorFound = false;

 //checkFormEmail()
 if (document.winactieform.email.value == '') {
  errorMessage = errorMessage + '- Geen e-mailadres ingevuld.\n';
  errorFound = true;
 }
 else {
  emailAddress = document.winactieform.email.value;
  if (emailAddress.search(/^[A-Za-z0-9_\-]+([.][A-Za-z0-9_\-]+)*[@][A-Za-z0-9_\-]+([.][A-Za-z0-9_\-]+)+$/) == -1) {
   errorMessage = errorMessage + '- Ongeldig e-mailadres ingevuld.\n';
   errorFound = true;
  }
 }

 //checkFormCode() {
 if (document.winactieform.code.value == '') {
  errorMessage = errorMessage + '- Geen wincode ingevuld.\n';
  errorFound = true;
 }
 else {
  winCode = document.winactieform.code.value;
  if (winCode.length > 7 || winCode.length < 6) {
   errorMessage = errorMessage + '- Ongeldig code ingevuld.\n';
   errorFound = true;
  }
 }

 if (errorFound) {
  alert(errorMessage);
  return false;
 }

}


function fixH(one,two) {
 if (document.getElementById('container_box')) {
  var lh=document.getElementById('container_box').offsetHeight-200;
  document.getElementById('content_box').style.height=lh+"px";
 }
}

function rollon(img_name) {
   document[img_name].src = '/files/images/buttons/' + img_name + '-over.jpg';
}

function rolloff(img_name) {
   document[img_name].src = '/files/images/buttons/' + img_name + '.jpg';
}

function toggle( targetId ) {
 if (document.getElementById) {
  target = document.getElementById( targetId );
  //alert(target.className);
  if (target.className == "menu_depth1 on") {
   target.className = "menu_depth1 off";
  }
  else if (target.className == "menu_depth1 off") {
   target.className = "menu_depth1 on";
  }
  else if (target.className == "menu_depth2 on") {
   target.className = "menu_depth2 off";
  }
  else if (target.className == "menu_depth2 off") {
   target.className = "menu_depth2 on";
  }
 }
}

var img1 = new Image(); img1.src = "/files/images/buttons/button-win-over.jpg";
var img1 = new Image(); img1.src = "/files/images/buttons/bureau-waddenweg-over.jpg";
var img1 = new Image(); img1.src = "/files/images/buttons/bureau-amstelveen-over.jpg";
var img1 = new Image(); img1.src = "/files/images/buttons/bureau-admiraal-over.jpg";
var img1 = new Image(); img1.src = "/files/images/buttons/bureau-havens-over.jpg";
var img1 = new Image(); img1.src = "/files/images/buttons/bureau-van-leijenberg-over.jpg";