jquery simplicity

gistfile1.phtml

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
<script type="text/javascript">
function update_filter($elements, str) {
  var s = str.toLowerCase();
  $elements.each(function(){
    $(this).text().toLowerCase().indexOf(s) != -1 ? $(this).show() : $(this).hide();
  });
}
</script>
Filter: <input onKeyUp="update_filter($('#my_table tbody tr'), this.value);">
<table id="my_table">
  <thead>
    <tr><th>Col 1</th><th>Col 2</th><th>Col 3</th></tr>
  </thead>
  <tbody>
    <tr><td>Hello</td><td>World</td><td>$1234</td></tr>
    <tr><td>Foo</td><td>Bar</td><td>$567</td></tr>
    <tr><td>World</td><td>Domination</td><td>$890</td></tr>
    <tr><td>1234</td><td>567</td><td>$1.99</td></tr>
  </tbody>
</table>