Overlay Tools mask not working with jQuery 1.9.1 , any ideas?

Overlay Tools mask not working with jQuery 1.9.1 , any ideas?

I downloaded this version jQuery Overlay Tools for jQuery1.9.1 also
jquery-1.9.1.js and jquery-ui.js (I need UI for datepicker). And I made my
overlay. But it seem that mask property for overlay doesn't work with this
version of jQuery. I tried same code witg older version of Overlay and
jQuery and it worked.
The problem is that I need .draggable() function and from what I can say,
is not available in earlier versions. I also noticed some more conflicts,
for now I can't pinpoint them.
Any suggestion, maybe similar experiences with successful fix?