Click event doesn't work on dynamically generated elements

I couldn't get live or delegate to work on a div in a lightbox (tinybox).

I used setTimeout successfullly, in the following simple way:

$('#displayContact').click(function() {
    TINY.box.show({html:'<form><textarea id="contactText"></textarea><div id="contactSubmit">Submit</div></form>', close:true});
    setTimeout(setContactClick, 1000);
})

function setContactClick() {
    $('#contactSubmit').click(function() {
        alert($('#contactText').val());
    })
}

Reference : https://stackoverflow.com/questions/6658752/click-event-doesnt-work-on-dynamically-generated-elements?rq=1