Here's another technique for creating divs with jQuery.
ELEMENT CLONING
Say you have an existing div in your page that you want to clone using jQuery (e.g. to duplicate an input a number of times in a form). You would do so as follows.
$('#clone_button').click(function() {
$('#clone_wrapper div:first')
.clone()
.append('clone')
.appendTo($('#clone_wrapper'));
});