code: public Element attribute(String attribute, long value)
      {
          if (attributeMap==null)
              attributeMap=new Hashtable(10);
          
          attributeMap.put(attribute,Long.toString(value));
          return this;
      }
docs: Add quoted element Attributes and value.
  @param attribute String of HTML attribute tag
  @param value String value of the attribute to be quoted
  @return This Element so calls can be chained.