//jQuery script part I: - add/delete rows
<script>

jQuery(document).ready(function() {

      jQuery('#add').click(function(e){
            var ca=jQuery('#dpchc').val();
          var selectedf = jQuery('#types_ft').val();

           e.preventDefault();

            if (selectedf == " VAT ")
    {
          ca++;
        jQuery('#dpchc').val(ca);
           jQuery('#table_rach').append('<tr id="d'+ca+'" class ="tr" onMouseOver="this.style.background='+bf+'" onMouseOut="this.style.background='+tr+'";><td class="container_res" width = "40px;"><center><input id="lp" type="hidden" value="'+ca+'" >'+ca+'</input></td><td class="container_res"><center><div><input type="text" class="preview" id="name'+ca+'" name="name" size="40;" line-height="0px" value=""></input></div></td><td class="container_res"><center><div class="td_div"><input type="text" class="preview" id="pkwiu'+ca+'" name="pkwiu" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div><input type="number" class="preview" id="ilosc'+ca+'" name="ilosc" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div><input type="text" class="preview" id="jdn'+ca+'" name="jdn" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div><input type="number" class="preview" id="cjnt'+ca+'" name="cjnt" size="40" line-height="0px" value=" "></input></div></td><td class="container_res"><center><div><input style = "width: 170px !important" type="number" class="preview" id="wrtn'+ca+'" name="wrtn" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div id="vt'+ca+'"><input style = "width: 170px !important" type="number" class="preview" id="vat'+ca+'" name="vat" size="40" line-height="0px" value="23"></input></div></td><td class="container_res"><center><div id="wvt'+ca+'"><input style = "width: 170px !important" type="number" class="preview" id="wavat'+ca+'" name="wavat" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div><input style = "width: 170px !important" type="number" class="preview" id="wabr'+ca+'" name="wabr" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><div><button type="button" name="remove" id="'+ca+'" class="delete2">X</button></div></td></tr>');
    }
    if (selectedf == " Podatnika zwolnionego z VAT "){
          ca++;
        jQuery('#dpchc').val(ca);
           jQuery('#table_rach').append('<tr id="d'+ca+'" class ="tr" onMouseOver="this.style.background='+bf+'" onMouseOut="this.style.background='+tr+'";><td class="container_res" width = "40px;"><center><input id="lp" type="hidden" value="'+ca+'" >'+ca+'</input></td><td class="container_res"><center><div><input type="text" class="preview" id="name'+ca+'" name="name" size="40;" line-height="0px" value=""></input></div></td><td class="container_res"><center><div class="td_div"><input type="text" class="preview" id="pkwiu'+ca+'" name="pkwiu" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div><input type="number" class="preview" id="ilosc'+ca+'" name="ilosc" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div><input type="text" class="preview" id="jdn'+ca+'" name="jdn" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div><input type="number" class="preview" id="cjnt'+ca+'" name="cjnt" size="40" line-height="0px" value=" "></input></div></td><td class="container_res"><center><div><input style = "width: 170px !important" type="number" class="preview" id="wrtn'+ca+'" name="wrtn" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><center><div id="vt'+ca+'"><input style = "width: 170px !important" type="number" class="preview" id="vat'+ca+'" name="vat" size="40" line-height="0px" value="0" readonly></input></div></td><td class="container_res"><center><div id="wvt'+ca+'"><input style = "width: 170px !important" type="number" class="preview" id="wavat'+ca+'" name="wavat" size="40" line-height="0px" value="" readonly></input></div></td><td class="container_res"><center><div><input style = "width: 170px !important" type="number" class="preview" id="wabr'+ca+'" name="wabr" size="40" line-height="0px" value=""></input></div></td><td class="container_res"><div><button type="button" name="remove" id="'+ca+'" class="delete2">X</button></div></td></tr>');

    }
      });

    jQuery("body").on("click", ".delete2", function (e) {
    e.preventDefault();

        var No5 = jQuery('#dpchc').val();
    jQuery('#d'+No5).remove();

    var No6 = parseInt(No5)-1;

    jQuery('#dpchc').val(No6);

});



//jQuery script part II - reading data, calculations and filling rest of cells in the table.


jQuery('.preview').on('input', function(){
            Licz();
 });

    var Licz = function () {

    co = jQuery('#dpchc').val();
    var arrayil = [];
    var arraycjn = [];
    var arrayvat=[];
    var arraywvat=[];
    var arraywb =[];
    var arraywn =[];
    var ilosc = "";
    var wnetto = "";
    var vat = "";
    var wvat = "";
    var wbrutto = "";
    var rzm = 0;
    var wtp = 0;

for(count=1;count<=co;count++){

    arraycjn[count] = jQuery('#cjnt'+count).val();
    arrayil[count] = jQuery('#ilosc'+count).val();
    arrayvat[count] = jQuery('#vat'+count).val();
}

for(counttp=1;counttp<=co;counttp++){
arraywn[counttp]=parseFloat(arraycjn[counttp])*parseFloat(arrayil[counttp]);

}
for(coun=1;coun<=co;coun++){
arraywvat[coun]=parseFloat((arraywn[coun]*arrayvat[coun]))/100;

}
for(cnt=1;cnt<=co;cnt++){
arraywb[cnt]=parseFloat(arraywn[cnt])+parseFloat(arraywvat[cnt]);

}
var crzm = parseInt(arraywb.length)-1;
for(cnnt=1;cnnt<=crzm;cnnt++){
rzm+=parseFloat(arraywb[cnnt]);

}
jQuery('#dzp').val(rzm);

var cwtp = parseInt(arraywvat.length)-1;
for(cnntt=1;cnntt<=crzm;cnntt++){
wtp+=parseFloat(arraywvat[cnntt]);

}
jQuery('#wtp').val(wtp);

for(cntt=1;cntt<=co;cntt++){
jQuery('#wrtn'+cntt).val(arraywn[cntt]);
jQuery('#wavat'+cntt).val(arraywvat[cntt]);
jQuery('#wabr'+cntt).val(arraywb[cntt]);
}

    }
    });
</script>