function printen()
{
var a = window.open('','','width=500,height=500');
a.document.open("text/html");
a.document.write('');
a.document.write('www.arbo-advies.nl');
a.document.write('');
a.document.write('');
a.document.write(document.getElementById('printdezediv').innerHTML);
a.document.write('');
a.document.close();
a.print();
a.window.close();
}