function boardProcessAnswer(xml){
	var models = xml.getElementsByTagName('model');
	var _select = document.getElementById("models");
	_select.length = 0;
	_select.options[0]=new Option(firstStr,'0');
	for(i=0;i<models.length;i++){
		_select.options[_select.length]=new Option(models[i].getAttribute("name"), models[i].getAttribute("id"));
	}
	_select.disabled = false;
};

function boardDoBeforStart() {
	var _select = document.getElementById("models");
	_select.options.length=0;
	_select.options[0]=new Option('Идет загрузка..','0');
	_select.disabled = true;
};

function doChange( obj, first ){
	firstStr = first;
	if (obj.value == 0){
		var _select = document.getElementById("models");
		_select.options.length=0;
		_select.options[0]=new Option(firstStr,'0');
	} else {
		var url = "/xml/models.php?id="+obj.value;
		if (ajaxHandler.is_idle)
		{
		    ajaxHandler.is_idle = false;
		    ajaxHandler.doBeforStart = boardDoBeforStart;
		    ajaxHandler.processAnswer = boardProcessAnswer;
		    ajaxHandler.loadXMLDoc(url);
		}
	}
}