Multiple Unity web players embedded on the same page

Situation: I have a Unity web player embedded on my page. When I click on an item, I'll hide the current unity web player and open up a div that contains a new very small unity web player that is used to rotate/look closer on the item.

The problem is that the new unity web player that is in the "popup"; it "works" but it is very unresponsive. The file is just 200KB (comparing to the main file that is 15MB ). I have tried hiding the div where the main unity file is in and minimizing it to width:1px, height:1px but no effect.

Is it impossible to have two Unity web players playing at the same time in the browser? Has anyone experienced this or have experience on this matter?

The reason why I'm doing this is to be able to use css to style the div; so we can have many themes and similar things. Unity is very limited when doing that kind of stuff. Also the buttons are in the div (e.g. "pick up", "put down").

I appreciate any input and ideas you can come up with! =)