If you haven't experienced the drag and drop bug with IE 6/7 yet, you might, and so I am posting a fix to make to the core library. The bug occurs at the offset function when trying to access the offsetParent. After dragging and dropping the first element I was getting a error in IE of "Object Required". This was not happening in FF and I originally thought it was related to an Ajax call and the onload functions not executing and assigning the drag and drop attributes after the the Ajax call was complete. I was wrong.

So I am providing a fix for the IE error that has to be applied to the jQuery core library.