jquery 1.4 live and an event to be notified when a new dom element is created

jquery 1.4 live and an event to be notified when a new dom element is created

As per the subject.

I have live focusin and focusout bound for form validation. But if some content is created dynamically (either via a templating system or via ajax) it doesn't seem possible to initialise those elements (i have placeholder text that i might want to add inside the element for example).

Is there an event that is fired when an element is added to the dom?

I hope this make sense!

many thanks
paul