code: public static void encodeHTML4DHTMLAttrs(ResponseWriter rw, Map<String, Object> attrs, String[] alist)
  			throws IOException {
  		// Encode attributes (HTML 4 + DHTML)
  
  		for (String a : alist) {
  			if (attrs.get(a) != null) {
  				String val = A.asString(attrs.get(a));
  				if (val != null && val.length() > 0) {
  					rw.writeAttribute(a, val, a);
  				}
  			}
  		}
  	}
docs: Encodes component attributes (HTML 4 + DHTML) TODO: replace this method
  with CoreRenderer.renderPassThruAttributes()
  
  @param rw
  ResponseWriter instance
  @param attrs
  @param alist
  @throws IOException