rem: return _content.QueryInterface(Components.interfaces.nsIInterfaceRequestor) .getInterface(Components.interfaces.nsIWebBrowserPrint); 
add: var contentWindow = aWindow ? aWindow : window.content; return contentWindow.QueryInterface(Components.interfaces.nsIInterfaceRequestor) .getInterface(Components.interfaces.nsIWebBrowserPrint); 
context:   getWebBrowserPrint: function ()  {    return _content.QueryInterface(Components.interfaces.nsIInterfaceRequestor)                   .getInterface(Components.interfaces.nsIWebBrowserPrint);  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/6a9fef4a8162f815ba1c2a2b047dcb8729371cc8/printUtils.js/clean/toolkit/components/printing/content/printUtils.js