Textarea text box watermark using jQuery

I am trying to use a watermark for an asp.net textbox control with jquery, and below is the code that I have, I see the title in the textarea text box, but when I focus or click on the text box, the watermark does not clear.

I got the script from here. http://www.ajaxblender.com/howto-add-hints-form-auto-focus-using-javascript.html

<asp:TextBox runat="server" ID="txtNew" class="auto-hint" title="Enter here ..." 
TextMode="MultiLine" Rows="7" Width="100%"></asp:TextBox>


<script type="text/javascript">
    $(document).ready(function () {
        // Focus auto-focus fields 
       $('.auto-focus:first').focus();

        // Initialize auto-hint fields 
        $('INPUT.auto-hint, TEXTAREA.auto-hint').focus(function () {
            if ($(this).val() == $(this).attr('title')) {
                $(this).val('');
                $(this).removeClass('auto-hint');
            }
        });

        $('INPUT.auto-hint, TEXTAREA.auto-hint').blur(function () {
            if ($(this).val() == '' && $(this).attr('title') != '') {
                $(this).val($(this).attr('title'));
                $(this).addClass('auto-hint');
            }
        });

        $('INPUT.auto-hint, TEXTAREA.auto-hint').each(function () {
            if ($(this).attr('title') == '') { return; }
            if ($(this).val() == '') { $(this).val($(this).attr('title')); }
            else { $(this).removeClass('auto-hint'); }
        });

    }); 
</script>