Minor bug in getPosition method of Interface plugin.

[jeffkretz@…]

Part of the getPosition function walks up the DOM to the body element to get the scroll position of the page.

while (el && el.tagName.toLowerCase() != 'body')

I had a situation whereby a parent element had no tag, and this method threw an exception. I suggest this implementation which solves the issue:

while (el && el.tagName && el.tagName.toLowerCase() != 'body')

[brandon]

Stefan, feel free to grab the .offset() method in the dimensions plugin and use it. It takes care of this issue and several others.