function vulPoplists(soort) {

   var url;

   if (soort=='MODELBRANDSTOF') {
     if (document.listfordealer.p_brandstof.value.length!=0) {
       document.listfordealer.p_sel_brandstof.value=document.listfordealer.p_brandstof.value;
     }
     url = '/owa_dima/owa/att_occsearch.getModellen_xml?p_merk='+document.listfordealer.p_merk.value+ 
                                                      '&p_code='+document.listfordealer.p_code.value+
                                                      '&p_brandstof='+document.listfordealer.p_brandstof.value;
   } else if (soort=='BRANDSTOF') {
     url = '/owa_dima/owa/att_occsearch.getBrandstof_ext_xml?p_code='+document.listfordealer.p_code.value+
                                                           '&p_merk='+document.listfordealer.p_merk.value+
                                                           '&p_model='+document.listfordealer.p_model.value;
   } else if (soort=='MERKMODEL'){
     url = '/owa_dima/owa/att_occsearch.getMerken_ext_xml?p_code='+document.listfordealer.p_code.value+
                                                        '&p_brandstof='+document.listfordealer.p_brandstof.value;
   } else if (soort=='MODEL') {
     url = '/owa_dima/owa/att_occsearch.getModellen_xml?p_merk='+document.listfordealer.p_merk.value+ 
                                                      '&p_code='+document.listfordealer.p_code.value+
                                                      '&p_brandstof='+document.listfordealer.p_brandstof.value;
   }

   xmlhttpHandler2(url, soort);
}

function xmlhttpResponse(dom,soort) {

  var poplist;
  var poplist_value;
  var selected_value;

  if (soort=='MERKMODEL') {
    poplist        = document.listfordealer.p_merk;
    poplist_value  = dom.getElementsByTagName('MERK');
    selected_value = document.listfordealer.p_merk.value;

    with (poplist) {
      for(i=options.length-1;i>0;i--) {
        options[i] = null;
      }
      // altijd een default option
      options[0] = new Option('alle merken','');
      // vul modellen
      for (var i=0; i<poplist_value.length;i++) {
        options[i+1] = new Option(poplist_value[i].firstChild.nodeValue,poplist_value[i].firstChild.nodeValue); 
        if (initCaps(poplist_value[i].firstChild.nodeValue)==initCaps(selected_value)){
          document.listfordealer.p_merk.options[i+1].selected=true;
        }
      }
      
      // Nu het model ophalen
      var url = '/owa_dima/owa/att_occsearch.getModellen_xml?p_merk='+document.listfordealer.p_merk.value+ 
                                                           '&p_code='+document.listfordealer.p_code.value+
                                                           '&p_brandstof='+document.listfordealer.p_brandstof.value;

      xmlhttpHandler2(url,'MODEL');
    }
  } else if (soort=='MODEL'||soort=='MODELBRANDSTOF'){
    poplist        = document.listfordealer.p_model;
    poplist_value  = dom.getElementsByTagName('MODEL');
    selected_value = document.listfordealer.p_sel_model.value;

    with (poplist) {
      for(i=options.length-1;i>0;i--) {
        options[i] = null;
      }
      // altijd een default option
      options[0] = new Option('Select een model','');
      // vul modellen
      for (var i=0; i<poplist_value.length;i++) {
        options[i+1] = new Option(poplist_value[i].firstChild.nodeValue,poplist_value[i].firstChild.nodeValue); 
        if (poplist_value[i].firstChild.nodeValue==selected_value){
          document.listfordealer.p_model.options[i+1].selected=true;
        }
        
      }
      
      if(soort=='MODELBRANDSTOF'){
        //Nu brandstof vullen
        var url='/owa_dima/owa/att_occsearch.getBrandstof_ext_xml?p_code='+document.listfordealer.p_code.value+
                                                                '&p_merk='+document.listfordealer.p_merk.value+
                                                                '&p_model='+document.listfordealer.p_model.value;
        xmlhttpHandler2(url,'BRANDSTOF');
      }
      
    }
  } else {

    poplist        = document.listfordealer.p_brandstof;
    poplist_value  = dom.getElementsByTagName('SOORT');
    poplist_descr  = dom.getElementsByTagName('OMS');
    selected_value = document.listfordealer.p_sel_brandstof.value;

    with (poplist) {
      for(i=options.length-1;i>0;i--) {
        options[i] = null;
      }
      // altijd een default option
      options[0] = new Option('alle brandstoffen','');
      // vul brandstof
      for (var i=0; i<poplist_value.length;i++) {
        options[i+1] = new Option(initCaps(poplist_descr[i].firstChild.nodeValue),poplist_value[i].firstChild.nodeValue); 
        if (initCaps(poplist_value[i].firstChild.nodeValue)==initCaps(selected_value)){
          document.listfordealer.p_brandstof.options[i+1].selected=true;
        }
      }
    }
  }
}

function initCaps(in_str) {
   var out_str = '';
   out_str = in_str.substr(0,1).toUpperCase()+in_str.substr(1).toLowerCase();
   return out_str;
}