add:  try { _content.printPreview(); } catch (e) {     } 
context: function BrowserPrintPreview(){  // implement me}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/760f64245aa10fda9ff33c7de4638ceca265bd19/navigator.js/buggy/xpfe/browser/resources/content/navigator.js