jQuery bookmarklet textnode not working

jQuery bookmarklet textnode not working

$('.messages').children().each(function() {
var textNode = $(this);
textNode.text(
textNode.text().replace("hi", "<img
src='http://stupidknews.com/wp-content/uploads/2011/09/smiley-face.jpg'
style='height:10px;'>")
);
});`
I have that, it replaces the text in all classes with messages fine, but
it replaces it with text, not with actual HTML.
How to make it work now!