网页内搜索(2)

<script type="text/javascript">
            $().ready(function() {
                $("#txtName").keyup(
                    function() {
                        $("table tr:gt(0)").hide();
                        var $d = $("table tr:gt(0)").filter(":contains(‘" + $.trim($("#txtName").val()) + "‘)");
                        $d.show();
                    }
                )
            })
        </script>
<div style="margin: 0 auto;">
动态搜索:<input  type="text" id="txtName" />
</div>
<table>内容</table>