$(function($) {
    var calc_summa = function (e) {
        var $this = $(this);
        var qty = parseFloat($this.closest('tr.row').find('td.qty input').val());
        var price = parseFloat($this.closest('tr.row').find('td.price input').val());
        var total_price = qty * price;
        if (total_price) {
            $this.closest('tr.row').find('td.total_price input').val(qty * price);
        }
    }
    window.calc_itogo = function (e) {
        var itogo_sum = 0;
        $('#tbl_items').find('.total_price input:visible').each(function(){
            var itogo_sum_row = $(this).val()? parseInt($(this).val()) : 0;
            itogo_sum += itogo_sum_row;
        })
        $('#itogo').html(itogo_sum);
    }
    var calc_itogo_nds = function() {
        $('#itogo_nds_text').html('НДС ' + $('#id_nds_value option:selected').text());
        $('#itogo_nds').html($('#id_nds_value').val() * parseInt($('#itogo').html()));
    }
    
    window.set_events = function set_events() {
        $("#tbl_items tr.row td.qty input").on('keyup', calc_summa);
        $("#tbl_items tr.row td.price input").on('keyup', calc_summa);

        $("#tbl_items tr.row td.qty input").blur(window.calc_itogo);
        $("#tbl_items tr.row td.price input").blur(window.calc_itogo);
        $("#tbl_items tr.row td.total_price input").blur(window.calc_itogo);

        //$('input[name=nds_type]').change(calc_itogo_nds);
        $('#id_nds_value').change(calc_itogo_nds);
        
//
        //$("#tbl_items tr.row td.qty input").blur(calc_itogo_nds);
        //$("#tbl_items tr.row td.price input").blur(calc_itogo_nds);
        //$("#tbl_items tr.row td.total_price input").blur(calc_itogo_nds);
    }
    window.set_events();
    window.calc_itogo();
    calc_itogo_nds();
})