Testform iframe
var iframeurl = 'https://www.ivn.nl/doe-mee/word-lid';
var params = window.location.search;
var thisScript = document.scripts[document.scripts.length - 1];
var iframe = document.createElement('iframe');
iframe.setAttribute('src', iframeurl + params);
iframe.setAttribute('width', '100%');
iframe.setAttribute('height', 500);
iframe.setAttribute('type', 'text/html');
iframe.setAttribute('frameborder', 0);
iframe.setAttribute('allowTransparency', 'true');
iframe.style.border = '0';
thisScript.parentElement.replaceChild(iframe, thisScript);