JavaScript: trim text

trim_text.jquery.js

trimText : function(obj, body, length){
            var splitLocation = body.indexOf(' ', length);
            if(splitLocation != -1) {
                // truncate tip
                var splitLocation = body.indexOf(' ', length),
                    str1 = body.substring(0, splitLocation),
                    str2 = body.substring(splitLocation, length - 1);
                obj.html(str1 + '<span class="truncate_ellipsis">&hellip;</span>' + '<span class="truncate_more">' + str2 + '</span>');
                obj.find('.truncate_more').css("display", "none");
            }
        }