Friendpaste

// jQuery function to find all the text nodes inside an element
$.fn.textNodes = function() {
  // array we will store all the text nodes in
  var ret = [];

  // nodes we want to skip
  var restricted_nodes = {'SCRIPT':1, 'NOSCRIPT':1, 'STYLE':1};

  $.each(this[0].childNodes, function() {
      if (this.nodeType == 3 && $.trim(this.nodeValue)) {
          ret.push(this);
      } else if (!restricted_nodes.hasOwnProperty(this.nodeName)) {
          $.each(this.childNodes, arguments.callee);
      }
  });
  return ret;
}

var textNodes = $('body').textNodes();

var text = '';
for (var i = 0; i < textNodes.length; ++i) {
    text += textNodes[i].nodeValue + ' ';
}
// text is now a string containing the full text of a webpage with no html


// see http://docs.jquery.com/Release:jQuery_1.3.2#:visible.2F:hidden_Overhauled
// for details on how jquery handles finding hidden elements