function myFunction2() {
    var input, filter, table, tr, td, td1, td2, td3, i, txtValue;
    input = document.getElementById("nvrInput");
    filter = input.value.toUpperCase();
    table = document.getElementById("nvrTable");
    tr = table.getElementsByTagName("tr");
    if (filter.length > 3) { //ga pas zoeken bij meer dan 3 karakters
        for (i = 0; i < tr.length; i++) {
            txtValue = "";
            td = tr[i].getElementsByTagName("td")[0];
            td1 = tr[i].getElementsByTagName("td")[2];
            td2 = tr[i].getElementsByTagName("td")[5];
            td3 = tr[i].getElementsByTagName("td")[6];

            if (td && td1 && td2 && td3) {
                txtValue = txtValue.concat(td.textContent || td.innerText, td1.textContent || td1.innerText, td2.textContent || td2.innerText, td3.textContent || td3.innerText);
                //txtValue = td.textContent || td.innerText;
                if (txtValue.toUpperCase().indexOf(filter) > -1) { //kijk of filter in txtValue zit
                    //gevonden
                    tr[i].style.display = "";
                } else {

                    tr[i].style.display = "none";
                }
            }
        }
    }

    if (filter.length < 1) { //reset resultaten bij lege searchbar
        for (i = 0; i < tr.length; i++) {
            tr[i].style.display = "";
        }
    }
}

function myFunction2old() {
    var input, filter, table, tr, td, td1, td2, td3, i, txtValue;
    input = document.getElementById("nvrInput");
    filter = input.value.toUpperCase();
    table = document.getElementById("nvrTable");
    tr = table.getElementsByTagName("tr");
    if (filter.length > 3) { //ga pas zoeken bij meer dan 3 karakters
        for (i = 0; i < tr.length; i++) {
            td = tr[i].getElementsByTagName("td")[0];
            if (td) {
                txtValue = td.textContent || td.innerText;
                if (txtValue.toUpperCase().indexOf(filter) > -1) { //kijk of filter in txtValue zit
                    //gevonden
                    tr[i].style.display = "";
                } else {
                    td1 = tr[i].getElementsByTagName("td")[2];
                    if (td1) {
                        txtValue = td1.textContent || td1.innerText;
                        if (txtValue.toUpperCase().indexOf(filter) > -1) {
                            //gevonden
                            tr[i].style.display = "";
                        } else {
                            td2 = tr[i].getElementsByTagName("td")[5];
                            if (td2) {
                                txtValue = td2.textContent || td2.innerText;
                                if (txtValue.toUpperCase().indexOf(filter) > -1) {
                                    //gevonden
                                    tr[i].style.display = "";
                                } else {
                                    td3 = tr[i].getElementsByTagName("td")[6];
                                    if (td3) {
                                        txtValue = td3.textContent || td3.innerText;
                                        if (txtValue.toUpperCase().indexOf(filter) > -1) {
                                            //gevonden
                                            tr[i].style.display = "";
                                        } else {
                                            tr[i].style.display = "none";
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    if (filter.length < 1) { //reset resultaten bij lege searchbar
        for (i = 0; i < tr.length; i++) {
            tr[i].style.display = "";
        }
    }
}