I have been working on a quicksearch module for one of my clients. I used javascript arrays to create and fill my formfields. Everything works the way it should, BUT: I need my form values to be different from my form labels. I need the user to see a name like "campingx", but I need the form value to be an id like "1234" so that id can communicate with the bookingmodule of this website. I hope someone can help me out here, I've been trying to figure this out for days now..

Here's my javascript

HTML Code:
var landcampings = new Array(); // variabele met de volgende arrays

landcampings[0] = new Array("Nederland", "Camping de Paasheuvel", "Camping de Holenberg", "Camping de Woensberg", "Camping de Gronselenput"); 
landcampings[1] = new Array("Tsjechie", "Camping 2000");
landcampings[2] = new Array("Hongarije", "Puszta Eldorado");

var arrivalDays = new Array(); // variabele met de volgende arrays

arrivalDays[0] = new Array("April","11-4-2014","12-4-2014","13-4-2014","14-4-2014","15-4-2014","16-4-2014","17-4-2014","18-4-2014","19-4-2014","21-4-2014","22-4-2014","23-4-2014","24-4-2014","25-4-2014","26-4-2014");
arrivalDays[1] = new Array("Mei","3-5-2014","4-5-2014","5-5-2014","6-5-2014","7-5-2014","8-5-2014","9-5-2014","10-5-2014","11-5-2014","12-5-2014","13-5-2014","14-5-2014","15-5-2014","16-5-2014","17-5-2014","18-5-2014","19-5-2014","20-5-2014","21-5-2014","22-5-2014","23-5-2014","24-5-2014","25-5-2014","26-5-2014","27-5-2014","28-5-2014","31-5-2014");
arrivalDays[2] = new Array("Juni","1-6-2014","2-6-2014","3-6-2014","4-6-2014","5-6-2014","6-6-2014","7-6-2014","9-6-2014","10-6-2014","11-6-2014","12-6-2014","13-6-2014","14-6-2014","15-6-2014","16-6-2014","17-6-2014","18-6-2014","19-6-2014","20-6-2014","21-6-2014","22-6-2014","23-6-2014","24-6-2014","25-6-2014","26-6-2014","27-6-2014","28-6-2014");
arrivalDays[3] = new Array("Juli","5-7-2014","12-7-2014","19-7-2014","26-7-2014");
arrivalDays[4] = new Array("Augustus","2-8-2014","9-8-2014","16-8-2014","23-8-2014","30-8-2014","31-8-2014");
arrivalDays[5] = new Array("September","1-9-2014","2-9-2014","3-9-2014","4-9-2014","5-9-2014","6-9-2014","7-9-2014","8-9-2014","9-9-2014","10-9-2014","11-9-2014","12-9-2014","13-9-2014","14-9-2014","15-9-2014","16-9-2014","17-9-2014","18-9-2014","19-9-2014","20-9-2014","21-9-2014","22-9-2014","23-9-2014","24-9-2014","25-9-2014","26-9-2014","27-9-2014","28-9-2014");
arrivalDays[6] = new Array("Oktober","4-10-2014","11-10-2014");

// toevoegen options
function appendOptions(key,id) {
  var elOptNew = document.createElement('option');
  elOptNew.text = key;
  elOptNew.value = id;
  var elSel = document.getElementById(id);
  try {
    elSel.add(elOptNew, null); // standards compliant; doesn't work in IE
  }
  catch(ex) { //catch exeptions
    elSel.add(elOptNew); // IE only
  }
}
  
// verwijderen options
function removeOptions(id) {
  var elSel = document.getElementById(id);
  for (i = elSel.length - 1; i>=0; i--) {  
    elSel.remove(i);
  }
}

// maak options voor land
function makeLand() {
  removeOptions('land'); 
  for (i=0;i<landcampings.length;i++) {   
    appendOptions(landcampings[i][0],'land'); 
  }
}

// maak options voor campings van selected land
function makeResort() {
  removeOptions('resort'); 
  var elSel = document.getElementById('land');
  for (i=0; i<elSel.length; i++) {
    if (elSel.options[i].selected) {
      for (j=1;j<landcampings[i].length;j++) {
	       appendOptions(landcampings[i][j],'resort');		   
      }
    }
  }
}

// maak options voor maand
function makeMaand() {
  removeOptions('maand'); 
  for (i=0;i<arrivalDays.length;i++) {   
    appendOptions(arrivalDays[i][0],'maand'); 
  }
}

// maak options voor aankomstdagen van selected maand
function makeStartdate() {
  removeOptions('startdate'); 
  var elSel = document.getElementById('maand');
  for (i=0; i<elSel.length; i++) {
    if (elSel.options[i].selected) {
      for (j=1;j<arrivalDays[i].length;j++) {
	       appendOptions(arrivalDays[i][j],'startdate');		   
      }
    }
  }
}
And here's my HTML form

HTML Code:
<table width="278" height="251" style="background-color:#747146; background-image:url(http://www.vodatent.com/images/quicksearch.jpg); background-repeat:no-repeat;">
<tr>
<td style="vertical-align:bottom; padding:30px; margin: 13px;">

<select name="land" id="land" onChange="javascript:makeResort();" class="invoerveld" style="width:200px;">
</select>
<br />
<select name="resort" id="resort" class="invoerveld" style="width:200px;" value="">
</select>
<select name="maand" id="maand" onChange="javascript:makeStartdate();" class="invoerveld" style="width:98px;">
</select>
<select name="startdate" id="startdate" class="invoerveld" style="width:98px;">
</select>

<select name="nof_nights" id="nof_nights" class="invoerveld" style="width:98px;">
  <option value="1">1 Nacht</option>
  <option value="2">2 Nachten</option>
  <option value="3">3 Nachten</option>
  <option value="4">4 Nachten</option>
  <option value="5">5 Nachten</option>
  <option value="6">6 Nachten</option>
  <option value="7">7 Nachten</option>
  <option value="8">8 Nachten</option>
  <option value="9">9 Nachten</option>
  <option value="10">10 Nachten</option>
  <option value="11">11 Nachten</option>
  <option value="12">12 Nachten</option>
  <option value="13">13 Nachten</option>
  <option value="14">14 Nachten</option>
  <option value="15">15 Nachten</option>
  <option value="16">16 Nachten</option>
  <option value="17">17 Nachten</option>
  <option value="18">18 Nachten</option>
  <option value="19">19 Nachten</option>
  <option value="20">20 Nachten</option>
  <option value="21">21 Nachten</option>
  <option value="22">22 Nachten</option>
</select>

<input class="invoerbutton" type="button" value="Zoek & boek" onClick="vormUrl(resort,startdate,nof_nights)"  style="width:98px;" />

</td>
</tr>
</table>
<script type="text/javascript">
    javascript:makeLand();makeResort();makeMaand();makeStartdate();
	
function vormUrl(resort,startdate,nof_nights){
window.location.href='http://vodatent.book.maxxton.com/vodatent/type/'+'resort'+'/'+resort.value+'/'+'startdate'+'/'+startdate.value+'/'+'nof_nights'+'/'+nof_nights.value+'/';

}	
	
  </script>