zk.afterLoad('zk', function() {
    var _zjq = {};
    zk.override(zjq.prototype, _zjq, {
        getAnimationSpeed : function (defaultValue) {
            var animationSpeed = jq(this.$().$n()).data('animationspeed'),
                jqSpeed = jq.fx.speeds;    // use jq instead of $
		
            if(typeof animationSpeed === 'string') {
                if(jqSpeed[animationSpeed])
                    return jqSpeed[animationSpeed];
                else
                    animationSpeed = parseInt(animationSpeed);
            }

            // Here are four animation functions in this class, which can't use 0 as duration so we increase animationSpeed by 1
            return typeof animationSpeed === 'number' && !isNaN(animationSpeed) ? animationSpeed + 1 : (defaultValue || jqSpeed._default);
        },
    })
});