function handleEditColsSubmit()
{
    const formData = [];
    let index = 0;
    const types = ['left', 'no', 'right'];
    const getSelector = (value) => `[data-zin-gid="${formGID}"] ul.${value}-cols`;
    const colsList = types.map(x => document.querySelector(getSelector(x)));

    for(let i = 0; i < colsList.length; i++)
    {
        const cols = colsList[i];
        if(!cols) continue;

        const children = Array.from(cols.children);
        for(let j = 0; j < children.length; j++)
        {
            const li = children[j];
            const checkbox = li.querySelector('input[type="checkbox"]');
            if(!checkbox) continue;

            const input = li.querySelector('input[type="text"]');
            const unit  = li.querySelector('select');
            formData.push({
                id: li.dataset.key,
                order: ++ index,
                show: checkbox.checked,
                width: unit.value === '%' ? String(input.value / 100) : input.value,
                fixed: types[i],
            });
        }
    }

    $.ajaxSubmit(
    {
        url: ajaxSaveUrl,
        data: {fields: JSON.stringify(formData)},
        closeModal: true,
        onSuccess: function()
        {
            let $table = $(`#table-${config.currentModule}-${config.currentMethod}`).closest('[z-use-dtable]');
            if(!$table.length) $table = $('#main [z-use-dtable]');
            $table.attr('zui-create-dtable', '');
        },
    });
}