function updateChildOne(){
	advAJAX.get({
		url: "index.php?m=ajax&a=category_fetcher&id="+$("parent").options[$("parent").selectedIndex].value,
		
		onInitialization: function() {
			$("childOne").options.length = 0;
			$("childOne").options[0] = new Option("trwa ładowanie", "0", true, false);
			$("childOne").disabled = true;
			
			
			//$("childTwo").options[0] = new Option("trwa ładowanie", "0", true, false);
			$("childTwo").disabled = true;

		},
		onError : function(obj) { alert("Error: " + obj.status); },
		onSuccess: function(obj) {
			
			records = obj.responseXML.getElementsByTagName("record");

			$("childOne").options.length = 0;
			$("childOne").options[0] = new Option("wybierz model", "0", true, false)
			
			$("childTwo").options.length = 0;
			$("childTwo").options[0] = new Option("wybierz model", "0", true, false);
			
			for(i = 0; i < records.length; i++){
				$("childOne").options[$("childOne").options.length] = new Option(records[i].childNodes[2].childNodes[0].nodeValue,records[i].childNodes[0].childNodes[0].nodeValue);
			}
			
			$("childOne").disabled = false;
		}
	});
}

function updateChildTwo(){
		advAJAX.get({
		url: "index.php?m=ajax&a=category_fetcher&id="+$("childOne").options[$("childOne").selectedIndex].value,
		
		onInitialization: function() {
			
			$("childTwo").options.length = 0;
			$("childTwo").options[0] = new Option("trwa ładowanie", "0", true, false);
			$("childTwo").disabled = true;
		},
		onError : function(obj) { alert("Error: " + obj.status); },
		onSuccess: function(obj) {
			
			records = obj.responseXML.getElementsByTagName("record");

			$("childTwo").options.length = 0;
			$("childTwo").options[0] = new Option("wszystkie", "0", true, false)
			
			for(i = 0; i < records.length; i++){
				$("childTwo").options[$("childTwo").options.length] = new Option(records[i].childNodes[2].childNodes[0].nodeValue,records[i].childNodes[0].childNodes[0].nodeValue);
			}
			
			$("childTwo").disabled = false;
		}
	});
}