Add new scroll content (clone) to jQuery UI slider?

Add new scroll content (clone) to jQuery UI slider?

So I have a slider much like the following in the fiddle that needs to
option to add new content (blocks, or scroll-content-item). Once this is
added, I will have inline editing to change the following text, but I
would prefer that when the block is cloned that is has no previous numbers
or text within it. Thanks in advance. http://jsfiddle.net/4QEgr/1/
$(".addNew").on("click", function(event){
//clone last block
//add new block to slider div
});