function searchNow() {
  elmCat = document.getElementById('categorie');
  
  strCat = elmCat.options[elmCat.selectedIndex].value;
               
  // zoeken op categorie
  if(strCat != ''){
    
    window.open('http://antwoord.bibliotheek.nl/openstaandevragen/hid/' + strCat);
    
  }
  else {
    alert('U heeft nog geen categorie geselecteerd!');
  }
}

document.write('<div style="background:#FFF;width:171px;height:131px;display:block;font-family: Arial,Helvetica,sans-serif;font-size:10px;color:#000;line-height:1.2em;">');
  document.write('<div style="width:171px;height:45px;float:left;"><a href="http://antwoord.bibliotheek.nl" target="_blank"><img src="http://antwoord.bibliotheek.nl/images/widget/widget_banner.gif" width="171" height="45" alt="antwoord.bibliotheek.nl" border="0" /></a></div>');

  <!-- Dynamic Content -->
  document.write('<div style="background:url(http://antwoord.bibliotheek.nl/images/widget/widget_content.gif); background-repeat:no-repeat; width:171px; height:46px; float:left">');
    document.write('<div style="width:160px;padding:6px 0 0 10px;font-size:10px;font-weight:normal;font-color:#000;text-align:left;float:left;">1614 vragen opgelost</div>');
    document.write('<div style="width:160px;padding:0px 0 0 10px;font-size:10px;font-weight:normal;font-color:#000;text-align:left;float:left;">153 vragen wachten op antwoord</div>');
  document.write('</div>');

  <!-- Categorie //-->
  document.write('<div style="background:url(http://antwoord.bibliotheek.nl/images/widget/widget_form.gif); background-repeat:no-repeat; width:171px; height:40px; float:left;">');
    document.write('<select id="categorie" style="font-family: Arial,Helvetica,sans-serif;font-size:10px;color:#000;line-height:1.2em;margin:0 4px 0 5px;width:112px; float:left;">');
      document.write('<option value="">kies een categorie</option>');
      document.write('<option value="1">Computer & internet</option>');
      document.write('<option value="2">Economie & arbeid</option>');
      document.write('<option value="3">Geschiedenis</option>');
      document.write('<option value="4">Gezondheid & welzijn</option>');
      document.write('<option value="5">Kunst & cultuur</option>');
      document.write('<option value="6">Maatschappij</option>');
      document.write('<option value="7">Natuur & milieu</option>');
      document.write('<option value="8">Onderwijs & opvoeding</option>');
      document.write('<option value="9">Wetenschap & techniek</option>');
      document.write('<option value="10">Nieuws & media</option>');
      document.write('<option value="11">Vrije tijd</option>');
      document.write('<option value="12">Diversen</option>');
    document.write('</select>');

    <!-- Zoek button //-->
    document.write('<div style="width:45px; height:43px; float:left;">');
      document.write('<input type="image" onclick="searchNow()" style="width:43px;height:16px;border:none; float:left;" value="ga_naar_button" src="http://antwoord.bibliotheek.nl/images/widget/widget_ga_naar_button.gif" alt="Ga naar" name="image">');
    document.write('</div>');               


  document.write('</div>');
document.write('</div>');