function fn_change_options(obj_id, id, option_id)
{
    var $ = Tygh.$;
    // Change cart status
    var cart_changed = true;
    
    var params = [];
    var update_ids = [];
    var cache_query = true;
    var defaultValues = {};
    
    var parents = $('.cm-reload-' + obj_id);
    $.each(parents, function(id, parent_elm) {
        var reload_id = $(parent_elm).prop('id');
        update_ids.push(reload_id);

        defaultValues[reload_id] = {};

        var elms = $(':input:not([type=radio]):not([type=checkbox])', parent_elm);
        $.each(elms, function(id, elm) {
            if (elm.type != 'submit' && elm.type != 'file' && !($(this).hasClass('cm-hint') && elm.value == elm.defaultValue) && elm.name.length != 0) {
                if (elm.name == 'no_cache' && elm.value) {
                    cache_query = false;
                }
                params.push({name: elm.name, value: elm.value});
            }
        });

        elms = $(':input', parent_elm);
        $.each(elms, function(id, elm) {
            if ($(elm).is('select')) {
                var elm_id = $(elm).prop('id');

                $('option', elm).each(function() {
                    if (this.defaultSelected) {
                        defaultValues[reload_id][elm_id] = this.value;
                    }
                });

            } else if ($(elm).is('input[type=radio], input[type=checkbox]')) {
                defaultValues[reload_id][elm_id] = elm.defaultChecked;
            } else {
                defaultValues[reload_id][elm_id] = elm.defaultValue;
            }

        });
    });
    
    var radio = $('input[type=radio]:checked, input[type=checkbox]', parents);
    $.each(radio, function(id, elm) {
        if ($(elm).prop('disabled')) {
            return true;
        }
        var value = elm.value;
        if ($(elm).is('input[type=checkbox]:checked')) {
            if (!$(elm).hasClass('cm-no-change')) {
                value = $(elm).val();
            }
        } else if ($(elm).is('input[type=checkbox]')) {
            if (!$(elm).hasClass('cm-no-change')) {
                value = 'unchecked';
            } else {
                value = '';
            }
        }
        
        params.push({name: elm.name, value: value});
    });
    
    var url = fn_url('products.options?changed_option[' + id + ']=' + option_id);

    for (var i = 0; i < params.length; i++) {
        url += '&' + params[i]['name'] + '=' + encodeURIComponent(params[i]['value']);
    }

    $.ceAjax('request', url, {
        result_ids: update_ids.join(',').toString(),
        caching: cache_query,
        force_exec: true,
        pre_processing: fn_pre_process_form_files,
        callback: function(data, params) {
            fn_post_process_form_files(data, params);

            var parents = $('.cm-reload-' + obj_id);
            $.each(parents, function(id, parent_elm) {
                if (data.html[$(parent_elm).prop('id')]) {
                    var reload_id = $(parent_elm).prop('id');

                    var elms = $(':input', parent_elm);

                    if (defaultValues[reload_id] != null) {
                        $.each(elms, function(id, elm) {
                            var elm_id = $(elm).prop('id');

                            if (defaultValues[reload_id][elm_id] != null) {
                                if ($(elm).is('select')) {
                                    var selected = {};
                                    var is_selected = false;
                                    $('option', elm).each(function() {
                                        selected[this.value] = this.defaultSelected;
                                        this.defaultSelected = (defaultValues[reload_id][elm_id] == this.value) ? true : false;
                                    });
                                    $('option', elm).each(function() {
                                        this.selected = selected[this.value];
                                        if (this.selected == true) {
                                            is_selected = true;
                                        }
                                    });
                                    if (!is_selected) {
                                        $('option', elm).get(0).selected = true;
                                    }
                                } else if ($(elm).is('input[type=radio], input[type=checkbox]')) {
                                    var checked = elm.defaultChecked;
                                    elm.defaultChecked = defaultValues[reload_id][elm_id];
                                    elm.checked = checked;
                                } else {
                                    var value = elm.defaultValue;
                                    elm.defaultValue = defaultValues[reload_id][elm_id];
                                    elm.value = value;
                                }
                            }
                        });
                    }
                }
            });

        },
        method: 'post'
    });
    
}

function fn_set_option_value(id, option_id, value)
{
    var $ = Tygh.$;

    var elm = $('#option_' + id + '_' + option_id);
    if (elm.prop('disabled')) {
        return false;
    }
    if (elm.prop('type') == 'select-one') {
        elm.val(value).change();
    } else {
        elms = $('#option_' + id + '_' + option_id + '_group');
        if ($.browser.msie) {
            $('input[type=radio][value=' + value + ']', elms).prop('checked', true);
        }
        $('input[type=radio][value=' + value + ']', elms).click();
    }

    return true;
}

function fn_pre_process_form_files(data, params)
{
    var $ = Tygh.$;
    if (data.html) {
        // Create temporarily div element
        $(Tygh.body).append('<div id="file_container" class="hidden"></div>');
        var container = {};
        container = $('#file_container');
        
        // Move files blocks to the temporarily created container
        for (var k in data.html) {
            $('#' + k + ' .fileuploader ,' + '#' + k + ' .ty-fileuploader').each(function(idx, elm){
                var jelm = $(elm);
                var jparent = jelm.parents('.control-group, .ty-control-group');
                jparent.appendTo(container);
                jparent.prop('id', 'moved_' + jparent.prop('id'));
            });
        }
    }
}

function fn_post_process_form_files(data, params)
{
    var $ = Tygh.$;
    var container = {};
    container = $('#file_container');
    
    $('div.control-group, div.ty-control-group', container).each(function(idx, elm){
        var jelm = $(elm);
        var elm_id = jelm.prop('id').replace('moved_', '');
        var target = $('#' + elm_id);
        target.html('');
        jelm.children().appendTo(target);
    });
    
    container.remove();
}

function fn_change_variant_image(prefix, opt_id, var_id)
{
    var $ = Tygh.$;
    var images = $('[id*=variant_image_' + prefix + '_' + opt_id + ']');
    images.removeClass('product-variant-image-selected').addClass('product-variant-image-unselected');
    
    if (typeof(var_id) == 'undefined') {
        var_id = $('select[id*=_' + prefix + '_' + opt_id + ']').val();
    }
    $('[id*=variant_image_' + prefix + '_' + opt_id + '_' + var_id + ']').removeClass('product-variant-image-unselected').addClass('product-variant-image-selected');
}