private String dobetween(String begin, String end, String source){
        //First of all we will create a single-line-doc:
        
        source = source.replace("\n", "");
        source = source.replace("\r\n", "");
        
        Pattern p = null;
        Matcher m = null;
        String result = "";
        try {
          p = Pattern.compile(begin+"(.*?)"+end);
        m = p.matcher(source);
        }catch(IllegalStateException ex){
           result = "";
           
        }
          if(m.find()){   result = m.group(1);   
          return(transformHTML(result)); } else { return(""); }
        
        
    }