function getModelList(mfg)
{
	if (mfg == '' || mfg == 'undefined')
		return;
	document.getElementById("model").disabled = true;
	document.getElementById("loading").innerHTML = '<img src="imgs/loading.gif" alt="Loading" style="width: auto; height: auto;">';
	doAjax('controller.php?action=models&mfg='+mfg,'modelList');	
}
function getModelListFinish(xmlDoc)
{
	// clear options then add the "all" option
	document.getElementById("model").options.length = 0; // clear options
	var opt = document.createElement("option"); // create option
	document.getElementById("model").options.add(opt);  // add option
	opt.text = 'All';
	opt.value = 'All';
	// get all other models
	var index;
	var modelArray = xmlDoc.getElementsByTagName("model");
	for (index=0; index<modelArray.length; index++)
	{
		var opt = document.createElement("option");
		document.getElementById("model").options.add(opt);
		var data = modelArray[index].childNodes[0].nodeValue;
		opt.text = data;
		opt.value = data;
		if (other != null && data == other)
		{
			opt.selected = true;
		}
	}
	document.getElementById("loading").innerHTML = '';
	document.getElementById("model").disabled = false;
}