$(function()

{

      $.fn.toggleText = function(data)

      {

          var oldTxt;

          var newTxt;

          if($(this).attr('toggletext') == undefined){

              oldTxt = $(this).text().trim();

              $(this).attr('toggletext',oldTxt);

              newTxt = $.trim(data);

          }else{

              newTxt = $(this).attr('toggletext').trim();

              oldTxt = $(this).text().trim();

              $(this).removeAttr('toggletext');

          }

          return (oldTxt == newTxt) ? $(this).text(oldTxt) : $(this).text(newTxt);

      }

      $('#toggleText').toggleText('New Text');

}