If using CFCONTENT and CFHEADER to stream an Excel file, will Javascript still work?

Hello, all,

I'm using a hidden iFrame that loads a page using CFCONTENT and CFHEADER to stream an Excel file from a form submit.  I'm _trying_ to use JavaScript to change the value of the button element that submits the form in the parent page.

I'm not seeing any success.  Does Javascript still run when a page uses CFCONTENT and CFHEADER?

I can't even get a simple JS alert() to work.

V/r,

^_^