var titel = typeof grubb_titel=='string'?grubb_titel:document.title;
var body = typeof grubb_body=='string'?grubb_body:'';
var url = typeof grubb_url=='string'?grubb_url:window.location.href;
url = url.replace(/\&/g, '%26');
document.write('<iframe src="http://www.grubb.nl/storylinkexternalsmall?source='+encodeURIComponent(url)+'&title='+encodeURIComponent(titel)+'&body='+encodeURIComponent(body)+'" marginheight="0px" marginwidth="0px" height="25px" width="65px" frameborder="0" scrolling="no"></iframe>');