I'm not the right person to answer this, but...What version of JMP? Any messages in the JMP log window? How did you save/export from JMP? Can you share a picture? Or the script?
I know that different JMP platforms have acquired more HTML capability over a number of JMP releases. I'm guessing if a control is disabled, it is because JMP is disabling it because the combination of features isn't supported.
Craige