$(function() {
 $('#filter').each(function() {
  var tbody = $(this).parent().next().find('tbody'),
   trs = tbody.find('tr'),
   tbodyClone = $('<tbody></tbody>'),
   trsClone = trs.clone();
  tbodyClone.append(trsClone);
  $(this).keyup(function() {
   var temp = $('<tbody></tbody>'),
    currentTh = false,
    value = $(this).val().toLowerCase();
   trsClone.each(function() {
    var tr = $(this);
    if (parseInt(this.id) == this.id) {
     if (tr.text().toLowerCase().indexOf(value) != -1) {
      if (currentTh) {
       temp.append(currentTh);
       currentTh = false;
      }
      temp.append(tr);
     }
    } else {
     currentTh = tr;
    }
   });
   tbody.html(temp.html());
  });
 });
});