jQuery 1.8.3, HTML, CSS, JavaScript
jQuery 1.9.1, HTML, CSS, JavaScript
see http://stackoverflow.com/questions/3931564/cloning-li-elements-in-jquery/3935200#3935200
jQuery 1.6.4, HTML, CSS, JavaScript
Forked from: iscpa (http://jsdo.it/iscpa/wpwG) which is forked from mcarlogic's (http://jsdo.it/mcarlogic/69d3) which is forked from rotsuya (http://jsdo.it/rotsuya/411c)
jQuery 1.5, HTML, CSS, JavaScript