如何将jquery ui自动完成添加到动态创建的元素中？

I'm trying to get jQueryUI AutoComplete to trigger on dynamically created form input elements, but it's not working. I've tried using keyup.autocomplete and keydown.autocomplete as bind events in $.live(), but it's binding to the new elements - only those already on the page.I'm trying to get jQueryUI AutoComplete to trig