function selectTextField() {
  var filter_text = document.getElementById("filter");
  filter_text.focus();
  filter_text.select();
}
function updateSearch() {
  var input_form = document.getElementById("filter");
  var filter = input_form.value.toLowerCase();
  input_form.value = filter;
  var table = document.getElementById("searchable");
  var alt_style = "norm";
  for (var i = 0; i < table.rows.length; i++) {
    try {
      var row = table.rows[i];
      if (row.className == "title") continue;
      var found = 0;
      for (var j = 0; j < row.cells.length; j++) {
        var cell = row.cells[j];
        if (cell.innerText.toLowerCase().indexOf(filter) != -1) {
          found = 1;
          break;
        }
      }
      if (found == 0) row.style.display = "none";
      else {
        row.style.display =
          "table-row"; /* DON'T make tables with block property */
        row.className = alt_style;
        if (alt_style == "alt") alt_style = "norm";
        else alt_style = "alt";
      }
    } catch (err) {}
  }
}