text: //jquery局部打印拓展方法
  var printAreaCount = 0;
  $.fn.printArea = function () {
      var ele = $(this);
      var idPrefix = "printArea_";
      removePrintArea(idPrefix + printAreaCount);
      printAreaCount++;
      var iframeId = idPrefix + printAreaCount;
      var iframeStyle = 'position:absolute;width:0px;height:0px;left:-500px;top:-500px;';
      iframe = document.createElement('IFRAME');
      $(iframe).attr({
          style: iframeStyle,
          id: iframeId
      });
      document.body.appendChild(iframe);
      var doc = iframe.contentWindow.document;
      $(document).find("link").filter(function () {
          return $(this).attr("rel").toLowerCase() == "stylesheet";
      }).each(
              function () {
                  doc.write('<link type="text/css" rel="stylesheet" href="'
                          + $(this).attr("href") + '" >');
              });
      doc.write('<div class="' + $(ele).attr("class") + '">' + $(ele).html()
              + '</div>');
      doc.close();
      var frameWindow = iframe.contentWindow;
      frameWindow.close();
      frameWindow.focus();
      frameWindow.print();
  }
  var removePrintArea = function (id) {
      $("iframe#" + id).remove();
  };		