如何在FlowDocument中启用超链接？

I have .htm files in my database, which are converted to FlowDocument and placed into FlowDocumentReader for viewing. The .htm files have hyperlinks inside them: 1)internal(to other fragments of document) 2)external(to other .htm documents in my database by name of the document). After converting and placing in FlowDocumentReader the hyperlinks are blue-colored and underlined, but there is no reaction when I click on them. The simplified .htm code which contains mentioned above hyperlinks is below:I have .htm files in my database, which are con