Add Flash CC canvas into WordPress template

I am trying to add a canvas created with Flash CC into a WordPress template. THe canvas works fine on the flat html page generated by Flash, but I can’t get it to work inside my php template. I have put the exact same, identical code in an html file and a php file, side by side in my theme folder. the html version works fine, the php version just shows js errors in the console.

Examples:
TypeError: cjs.Container is not a constructor
and
TypeError: lib.mythingy is not a constructor

I have googled this and it tells me this has to do with javascript namespacing but I do not e
know what that means – I am primarily a front end designer who uses canvas to make animations, and namespacing is not something I know about at all.

I have been able to show the canvas in my php file by adding the flat html version in an iframe, but that seems to me to be a bit of a cludge.

Ha sanyone else been able to do this successfully/ If so I would be eternally grateful for a clear exlanation of what I should do!

Thanks