live('autocomplete-suggestion', 'mouseleave',
function(e){
var sel = that.sc.querySelector('.autocomplete-suggestion.selected');
if (sel) setTimeout(function(){ sel.className = sel.className.replace('selected', ''); }, 20);
}, that.sc);

What does this code mean?

I think it doesn't working.
Because that.sc and parent are not included "autocomplete-suggestion"
What do you think about it?