I can't seem to disable text-selection in webkit browsers when using jQuery UI .draggable(). I've tried using the webkit specific css (-webkit-user-select and -webkit-user-drag) in various combinations but haven't had any luck.
Here's a jsfiddle where you can reproduce the problem: http://jsfiddle.net/dmosher/8ZGLR/
disableSelection is your friend here.
.disableSelection() is an undocumented
(for now) core utility. It's useful
for making text elements, or elements
that contain text, not
text-selectable. For example, if you
have a draggable element, you may not
want text selection to occur when the
user goes to drag the element.
You may want to create a helper so it looks obvious that something is being dragged.
Updated demo