//timer support
jQuery.timer = function (interval, callback) {
    var interval = interval || 100;
    if (!callback) return false;

    _timer = function (interval, callback) {
        this.stop = function () {
            clearInterval(self.id);
        };

        this.internalCallback = function () {
            callback(self);
        };

        this.reset = function (val) {
            if (self.id) clearInterval(self.id);
            var val = val || 100;
            this.id = setInterval(this.internalCallback, val);
        };

        this.interval = interval;
        this.id = setInterval(this.internalCallback, this.interval);

        var self = this;
    };

    return new _timer(interval, callback);
};