function goCars(url_prefix) {

	if(!url_prefix) url_prefix = "/" + language + "/cars";

	var url = url_prefix + "/?mark_id=" + $("#marks").val();
	if($("#models").val()) {
		url += "&model_id=" + $("#models").val();
		if($("#bodies").val()) url += "&body_id=" + $("#bodies").val();
	}

	if($("#countries").val()) {
		if(!$("#marks").val()) url = "/" + language + "/cars/?";
		else url += "&";

		url += "country_id=" + $("#countries").val();
		if($("#regions").val()) {
			url += "&region_id=" + $("#regions").val();
			if($("#cities").val()) url += "&city_id=" + $("#cities").val();
		}
	}

	//if($("#is_sell").attr("checked")) url += "&is_sell=1";

	document.location.href = url;

	return false;
}