Your active content is the Auctiva and Sellathon Apps at the bottom of your listing.  Auctiva have said that they will be replacing all their old gallaries with new No Active content ones.

To make it mobile friendly replace

<font rwr='1' size='4' style='font-family:Arial'>

with

<meta name="viewport" content="width=device-width, initial-scale=1">

If "<font rwr='1' size='4' style='font-family:Arial'>" not present add "<meta name="viewport" content="width=device-width, initial-scale=1">" to your HTML