private static boolean isUrlInPosts(Element elt, String url){
		Elements elementsPosts = elt.select(PostsParameters.getPostContainerTag()+"."+PostsParameters.getPostContainerClass());
		for (int j=0; j<elementsPosts.size(); j++ ){
			Element elementPost = elementsPosts.get(j);
			Element elementMessage = null;
			if (elementPost.select(PostsParameters.getMessageContainerTag()+"."+PostsParameters.getMessageContainerClass()).size()>0) {
				elementMessage = elementPost.select(PostsParameters.getMessageContainerTag()+"."
						+PostsParameters.getMessageContainerClass()).first();
			}
			if (elementMessage!=null){
				if (elementMessage.toString().contains(url)) {
					return true;
				}
			}
		}
		return false;
	}