function fillCarModels(){
		var carID = document.serviceFrm.carID.options[document.serviceFrm.carID.selectedIndex].value;
		makePOSTRequest(document.getElementsByTagName('base')[0].href+"index.html/services|returnModels", 'carID='+carID, 'displaySelectModels');
	}

function displaySelectModels(){
	if (http_request_di.readyState == 4) 
	  if (http_request_di.status == 200){
	  	document.serviceFrm.carModelID.innerHTML = "";
	  	var responseStr = http_request_di.responseText;
	  	var aModels = responseStr.split("#");
	  	for (i in aModels){
	  			aValues = aModels[i].split("|");
	  			newEl = document.createElement('OPTION');
	  			newEl.setAttribute('value', aValues[0]);
	  			newEl.innerHTML = aValues[1];
	  			document.serviceFrm.carModelID.appendChild(newEl);
	  	 }
	  }
	}

var http_request_di = false;
function makePOSTRequest(url, parameters, onreadystatechangeFunctionName) { 	
		http_request_di = false;
    if (window.XMLHttpRequest) { // Mozilla, Safari,...
       http_request_di = new XMLHttpRequest();
       if (http_request_di.overrideMimeType) {
          http_request_di.overrideMimeType('text/xml');
       }
    } else if (window.ActiveXObject) { // IE    
       try {
          http_request_di = new ActiveXObject("Msxml2.XMLHTTP");
       } catch (e) {       
          try {
             http_request_di = new ActiveXObject("Microsoft.XMLHTTP");
          } catch (e) {}
       }
    }
    if (!http_request_di) {
       alert('Cannot create XMLHTTP instance');
       return false;
    }
		
		http_request_di.onreadystatechange = eval(onreadystatechangeFunctionName);
    http_request_di.open('POST', url, true);
    http_request_di.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http_request_di.setRequestHeader("Content-length", parameters.length);
    http_request_di.setRequestHeader("Connection", "close");
    http_request_di.send(parameters);

 }