view source is not displaying for this link: http://jqueryui.com/draggable/#visual-feedback

view source is not displaying for this link: http://jqueryui.com/draggable/#visual-feedback

I have tried to view this link ( http://jqueryui.com/draggable/#visual-feedback) in several browsers w/o any success.  I students who have tried to access it was well w/o success.  I do see view source in all the ones I just clicked on.  Any help would be appreciated.