void analyzeAnchor(String anchor) {
	String href = extract(anchor, "href");
	//    if (href == null) System.err.println("href null anchor" + anchor);
	if (href == null) return;
	try {
	    //	href = fixUrl(href);
	    //	System.err.println("in analyzeAnchore: adding " + base + "|" + href);
	    addURL(new URL(base, href));
	} catch (MalformedURLException e) {
	    anchor = anchor.toLowerCase();
	    // java doesn't understand mailto and will throw an exception
	    //	    if (!href.startsWith("mailto:")) {
	    //		e.printStackTrace();
	    //	    }
	}
    }