Collpasible Drag & Drop Panels Using jQuery
http://webdeveloperplus.com/jquery/collpasible-drag-drop-panels/

# $('.column').sortable({ # connectWith: '.column', # handle: 'h2', # cursor: 'move', # placeholder: 'placeholder', # forcePlaceholderSize: true, # opacity: 0.4, # }) # .disableSelection();