* Creates a PDF viewer with a scripting interface. This is basically 1) an
* iframe which is navigated to the PDF viewer extension and 2) a scripting
* interface which provides access to various features of the viewer for use
* Creates a PDF viewer with a scripting interface. This is basically 1) an
* iframe which is navigated to the PDF viewer extension and 2) a scripting
* interface which provides access to various features of the viewer for use