private void setVideoUrls(Document doc, HtmlProperties prop) {
		// find video urls
		Elements elements = doc.select(prop.getVideoClass());

		videoUrls = Collections.synchronizedList(new ArrayList());
		try {
			for (Element e : elements) {
				Elements subElements = e.select("a[href]");
				String href = subElements.first().attr("href");
				synchronized (videoUrls) {
					videoUrls.add(StringHandler.mergeStr(prop.getPrevUrl(), href, "/"));
				}
			}
		} catch (Exception e) {
			println("Video box not found");
		}

		for (Object s : videoUrls) {
			println(s);
		}

	}