JQuery Drag and Drop plug-in: Selection: How can I detect if there is a drop happening (the selection div appears)?

[abe]

So here:

http://threedubmedia.com/code/event/drop/demo/selection

Then, I am adding a functionality so that when the mouse hovers over a
'<div class="drop">' element, some div with more information and a
higher z-index will appear near that div (like in Facebook when you
point your mouse on a user's/friend link) and when I moved the mouse
out of the div's area the second div will disappear. However, when I
am selecting the first kind of divs (the one with class 'drop'), I
don't want the second div to appear.