Hello,
I understand you have two dropdown boxes;
1. MFG hosts (default all, I assume behind the scenes you have a query that provides the list of the hosts that are MFG related. I assume you have a query likewise for the MQSQL dropdown.
Then the Panel has the MSG hosts. I really can't see going through work to try to hide unhide panels. Depending on the querys used and if you can attach a sample source for the dashboard would help.
I would recommend the following approach:
if a single search that can be run to list all hosts both mysql/msg with a flag where you can set a variable say host_type or something. then you could do a dropy down with static values for MSG and MySql set a variable $host_type$ . Then the host dropdown has static all and will then filter to either MSG or Mysql based in where host_type=$host_type$
Then your panel would simply be called Hosts, and same clause to list out any matching data using same type of filter where cluase host_type=$host_type$ to do something more.
I have shy'd away of doing radio buttons; and stick to drop down as layouts just don't look clean.
Hope this helps; if can post the source maybe can work it up and get you solved.
