jquery - Understanding curtain.js -

i've been trying understand how use jquery plugin curtain.js (https://github.com/victa/curtain.js).

i've tried follow instructions, must doing wrong because can't work.

maybe problem else, jquery wrote is:

$(function () {     $('.curtains').curtain({         scrollspeed: 400     }); }); 

i've made fiddle can see code have now. fiddle here: http://jsfiddle.net/nvggw/1/

any welcome. thank you!

i think doing ok, doesnt work latest version of jquery, works ok jquery 1.7.2, i've changed fiddle , included copy of plugin in js window:

http://jsfiddle.net/jamesking/nvggw/3/

<ol class="curtains"> <li id="one" class="sectionone">     <h1>section one</h1> </li><!-- end #sectionone --> <li id="two" class="sectiontwo">     <h1>section two</h1> </li><!-- end #sectiontwo --> <li id="three" class="sectionthree">     <h1>section three</h1> </li><!-- end #sectionthree --> <li id="four" class="sectionfour">     <h1>section four</h1> </li><!-- end #sectionfour --> </ol>