Web Page Fonts Are Differant Sizes

Hello:

I'm using a MacMini with Snow Leopard and an HP Photosmart Premium C410a.
The browsers are Firefox 11.0 and Safari 5.1.5. We have used both USB and Network
Connections (modem/router)

When I print articles from web sites, that are mulitple pages, the first page shows
both in Preview and when printed a smaller font size than the rest of the pages from
the same article from the same web site.

We have tried resetting the printer, reinstalling the printer software, reinstalling both
browsers, running Permissions, reinstalled the Combo Update.

Non of the above makes any changes - we still get a smaller font on the first page.

Any input, suggestions, ideas - most welcome