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.
