[jQuery] TypeError: Result of expression '(o.fx.step[this.prop]||o.fx.step._default)' [0] is not a function.

[jQuery] TypeError: Result of expression '(o.fx.step[this.prop]||o.fx.step._default)' [0] is not a function.


I really don't know what's causing this error because I don't get it
in any other browser except Safari 4 with WebKit r41521 (latest as of
3/9/09): http://nightly.webkit.org/
http://users.tpg.com.au/j_birch/plugins/superfish/#examples
You can see the error here when you hover over the blue menu a
dropdown should appear, but alas it does not.
http://fancy.klade.lv/example
Also on this page when you click any of the images.