code: function(range){
          var container = getContainer(range)
          ,parentNode = $(container).parent();
          
          link.call(body, {
            href: parentNode.attr('href')
            ,target: parentNode.attr('target')
          }, function(field){
            var parent = parentNode[0];
            if(parent.tagName === 'A'){
              parent.href = field.url;
            } else {
              insertInline.call(iframeWin, 'a', {
                target: field.target
                ,href: field.url
                ,text: field.url
              }, range);
            }
          });
        }
docs: 超链接