You can configure the Java Viewer right-click File Options to appear:
strDocWrite+='<param name="fileMenuOpen" value="true">';
The default mode is "true". In the default mode, the File options, Open File and Open URL, appear enabled for users.
strDocWrite+='<param name="fileMenuOpen" value="false">';
The default mode is "true". If you set it to "false", the Open File and Open URL functions under the File option will appear disabled for users.