Why is Search while Type functionality on VFP not working as expected between apex: tab transition?

    [removed]

        // Account Search script

        function searchByAccountName() {

            var input, filter, table, tr, td, i, txtValue, multipletables;

            input = document.getElementById("inputAccountName");

            filter = input.value.toUpperCase();

            multipletables = ["schTablePrimaryDetail","schTable1PrimaryEdit","schTableSecondaryDetail","schTable1SecondaryEdit"];

            var x = multipletables.length;

            for (var k = 0; k < multipletables>

                table = document.getElementById(multipletables[k]);

                tr = table.getElementsByTagName("tr");

                for (i = 1; i < tr>

                    td = tr[i].getElementsByTagName("td")[0];

                    if (td) {

                    txtValue = td.textContent || td.innerText;

                        if (txtValue.toUpperCase().indexOf(filter) > -1) {

                            tr[i].style.display = "";

                        } else {

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

                        }

                    }

                }

            }

        }

    [removed]

The functionality works just fine on Primary Tab where the accountName typed in the input "text" would show the corresponding account from the list of accounts with in the table. However it wont work on Secondary Tab and I'm unable to figure out/ debug what went wrong where the functionality won't work when switched to other tab. Please let me know what i'm missing here. Thanks in advance!

Why is Search while Type functionality not working as expected between apex tab transitions?