Shorten text plugin for jQuery

;(function($) {

  $.fn.shorten = function(settings) {

   var config = $.extend( {
     showChars : 100,
     ellipsesText : "...",
     moreText : "more",
     lessText : "less"
    }, settings);

    $('.morelink').live('click', function() {
      var $this = $(this);

      // Toggle del nombre del link
      if ($this.hasClass('less')) { // clic en more para mostrar less

        $this.removeClass('less');
        $this.html(config.moreText);

        // muestro shorcontent y escondo allcontent
        $this.parent().prev().prev().show(); // shortcontent
        $this.parent().prev().hide(); // allcontent

      } else { // click en less para mostrar more

        $this.addClass('less');
        $this.html(config.lessText);

        $this.parent().prev().prev().hide(); // shortcontent
        $this.parent().prev().show(); // allcontent
      }

      return false;
    });

    return this.each(function() {
      var $this = $(this);

      var content = $this.html();
      if (content.length > config.showChars) {
        var c = content.substr(0, config.showChars);
        if (c.indexOf('<') >= 0) // If there's HTML don't want to cut it
        {
          var inTag = false; // I'm in a tag?
          var bag = ''; // Put the characters to be shown here
          var countChars = 0; // Current bag size
          var openTags = []; // Stack for opened tags, so I can close them later

          for (i=0; i<content.length; i++)
          {
            if (content[i] == '<' && !inTag)
            {
              inTag = true;

              // This could be "tag" or "/tag"
              tagName = content.substring(i+1, content.indexOf('>', i));

              // If its a closing tag
              if (tagName[0] == '/')
              {
                if (tagName != '/'+openTags[0]) console.log('ERROR en HTML: el tope del stack debe ser la tag que cierra');
                else
                  openTags.shift(); // Pops the last tag from the open tag stack (the tag is closed in the retult HTML!)
              }
              else
              {
                // There are some nasty tags that don't have a close tag like <br/>
                if (tagName.toLowerCase() != 'br')
                  openTags.unshift( tagName );// Agrega al inicio el nombre de la tag que abre
              }
            }
            if (inTag && content[i] == '>')
            {
              inTag = false;
            }

            if (inTag) bag += content[i]; // Add tag name chars to the result
            else
            {
              if (countChars < config.showChars)
              {
                bag += content[i];
                countChars ++;
              }
              else // Ya tengo los caracteres necesarios
              {
                if (openTags.length > 0) // Tengo tags sin cerrar
                {
                  console.log('Quedaron tags abiertas');
                  console.log(openTags);
                  for (j=0; j<openTags.length; j++)
                  {
                    console.log('Cierro tag '+ openTags[j]);
                    bag += '</'+ openTags[j] +'>'; // Cierro todas las tags que quedaron abiertas

                    // You could shift the tag from the stack to check if you end with an empty stack, that means you have closed all open tags
                  }
                  break;
                }
              }
            }
          }
          c = bag;
        }

        var html = '<span class="shortcontent">' + c + '&nbsp;' + config.ellipsesText +
                   '</span><span class="allcontent">' + content +
                   '</span>&nbsp;&nbsp;<span><a href="javascript://nop/" class="morelink">' + config.moreText + '</a></span>';

        $this.html(html);
        $(".allcontent").hide(); // Esconde el contenido completo para todos los textos
      }
    });
  };
})(jQuery);