rem: try { return this.getIframe().contentDocument; } 
add: try { return this.getIframeNode().contentDocument; } 
context:   proto.getContentDocument = function()  {    if (this.isCreated()) {      try { return this.getIframe().contentDocument; }      catch (ex) {};    };    return null;  };
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/c7f9336de8b6bdee7fb2589a17e447d73a621da7/QxIframe.js/clean/qooxdoo/source/script/widgets/QxIframe.js