How to .load div except one child div
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I have a post area div which needs to be loaded every 20 seconds to keep the posts and comments updated. But the problem is, the input type text gets also refreshed since it is inside the post area div. I could not also get it out of the div since i need to wrap it inside the while loop, which is also inside the post area div. I found some jquery codes here which uses :not(#exclude) and $.filter() but I am having problem making it work.

here is my .load code: 
$('#post_area').load('include/echo_post.php?id=<?php echo $_GET['id'];?>').fadeIn("slow");