$(document).ready(function(){

	$('.block_announcement .close').click(function(){
		blockElement = $(this).parents('.block_announcement');
		var id = blockElement.attr('id');
		blockElement.fadeOut();
		$.ajax({
			url: site_url('announcement/close'),
			type: "POST",
			data: "id="+id,
			async: false
		});
		
	});

});