$(document).ready(function(){
$(".bara_top",this).click(function () {
		if ($(".an_post_content").is(":hidden")) {
        	$(".an_post_content").slideDown("fast");
			$(".plusmin").css("background-image","url(wp-content/themes/33module/images/minus.gif)");
      	} else {
        	$(".an_post_content").slideUp("fast");
			$(".plusmin").css("background-image","url(wp-content/themes/33module/images/plus.gif)");
      	}
	});
});