(function($) {
    $.fn.countto = function(opts) {
        var options = $.extend({}, $.fn.countto.defaults, opts);
        return $(this).each(function() {
            var _this = this,
                originaldata = $(this).text(),
                loops = math.ceil(options.speed / options.refreshinterval),
                increment = ($(this).text() - options.from) / loops,
                loopcount = 0,
                value = options.from,
                interval = setinterval(updatetimer, options.refreshinterval);

            function updatetimer() {
                value += increment;
                loopcount++;
                var str = value.tofixed(options.decimals);
                this.sizenum = str.length;
                this.sizenumbefore = this.sizenum - options.decimals - 1;
                if (this.sizenumbefore >= options.beforesize) { $(_this).html(str + options.lastsymbol); } else { this._str = array(options.beforesize - this.sizenumbefore + 1).join('0') + str;
                    $(_this).html(this._str + options.lastsymbol); }
                if (typeof(options.onupdate) == 'function') { options.onupdate.call(_this, value, loopcount); }
                if (loopcount >= loops) { clearinterval(interval);
                    $(_this).html(originaldata + options.lastsymbol);
                    value = $(_this).text(); if (typeof(options.oncomplete) == 'function') { options.oncomplete(value, loopcount, _this); } }
            }
        });
    };
    $.fn.countto.defaults = { lastsymbol: "%", from: 0, speed: 1000, refreshinterval: 100, beforesize: 0, decimals: 0, onupdate: null, oncomplete: null };
})(jquery);