<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<style type="text/css">
#div1, #div2 {
background: red;
width: 50px;
height: 50px;
}
#div2 {
background: green;
display: none;
}
</style>
<script type="text/javascript">
$(function(){
$('#div1').delay(1500).queue(function(){
$(this).remove();
$('#div2').fadeIn(400);
});
});
</script>
<div id="div1"></div>
<div id="div2"></div>