Please explain this strange behavior of jQuery draggables (in Chrome)
Apparently a bug in jQuery UI that was fixed in jQuery UI 1.8.6. You are using 1.7.2.
It wasn't stopping selection..
Reference posts:
http://forum.jquery.com/topic/chrome-text-select-cursor-on-drag
http://bugs.jqueryui.com/ticket/4163
One solution:
$(".ui-draggable").each(function() { this.onselectstart = function() { return false; };});