var loadFields = function(){
    var cmake = document.getElementById('used_make').value;
    var cmodel =$('#used_model').val();
    var cbadge = document.getElementById('used_badge').value;
    var cseries = document.getElementById('used_series').value;
    $.getJSON('/getfields.php',
    {
        make: cmake,
        model: cmodel,
        badge : cbadge,
        series: cseries,
        'type': 'used'
    },
    function(data, status){
        var fields = new Array('series', 'badges', 'bodies');
        var fields_name = new Array('Series', 'Variant', 'Body');
        var ids = new Array('used_series', 'used_badge', 'used_body');
        for (var i = 0; i < fields.length; i++) {

            var elem = document.getElementById(ids[i]);

            $(elem).html('<option value="">Any '+fields_name[i]+'</option>');
            if (status.toLowerCase() == 'success'){
                var options = data[fields[i]];
                var selectedOption ;
                //selectedOption = eval('selected_'+fields[i]);

                for (var option in options){

                    var selected = '';
//                    if (option.toLowerCase() == selectedOption.toLowerCase()){
//                        selected = 'selected="selected"';
//                    }
                    $(elem).append('<option value="' + option + '" ' + selected + '>' + option + '</option>');
                }
            }
        }
    //		disableFields(false);
    });
    return false;
};

$('document').ready(function(){
    $('#used_model').change(loadFields); 
});