Font detection for a particular word in Richtext item

Hello Guys…I am facing a challenge, that is how to detect font face of a particular word placed in a richtext item.

Suppose, I have a richtextitem field “content”.

In content field having three line in differnet font…

IBM on Demand Network (font is in arial)

IBM on Demand Community ( font is in Default Monospace)

IBM on Demand Business (font is in Garamond)

Now I have to use LotusScript and need to identify that content field have a word “Demand” in Default Monospace or not?

What would be the approach? Thanks to everyone who help me out font tracing issues in richtext item…

Suvankar