User's Topics

In our help system, we have a breadcrumb that shows the location of the current topic in the header. What we want to do for the breadcrumb path is: Change the style of hyperlinks (regular, hover style); Change or disable the "<Root level>" text; Change the delimiter from the ">" char to "|" char. How can we do that?

I have modified the Hyperlink and Active Hyperlink styles on the Styles pane (View|Styles), but none of the existing hyperlinks in my help project have been updated: they still have the old style. How can I change the style of existing hyperlinks in my project?