Adding Ellipsis after a number of characters...

Adding Ellipsis after a number of characters...

Hi there,

Im a newby in Jquery, and Im whiling to learn more about it!

By now, im having a problem with a text box which I need to show and hide a part of the content, but inserting the Elippsis when the part is hidden!

bellow the html and script codes!

Any help plz?
  1.   function toggle_guru(id, anchor) {
                var b = $(id);
                if(b.hasClass('guru'))
                {
                    b.animate({ "height": "210px" }, 500);
                    $(anchor).html('read more');
                    b.removeClass('guru');
                }
                else
                {
                  b.animate({ "height": '340px' }, 500);
                  $(anchor).html('read less');
                  b.addClass('guru');
                }
               
                }














  2. <div class="add_opinion_content">
     Sells a wide range of entertainment products online. A 101cd.com voucher code allows you to make even bigger savings on the already great prices. You ca Sells a wide range of entertainment products online. A 101cd.com voucher code allows you to make even bigger savings on the already great prices. You can choose from Sells a wide range of entertainment products online. A 101cd.com voucher code allows you to make even bigger savings on the already great prices. You can choose from choose!!
     </div>

    <a id="read_more" class="guru" onClick="toggle_guru('.add_opinion_content','#read_more');">read more </a>