The button may be fake, and requires to be wired up using the form tag's submit behavior. In other words, you have to write a function to capture the data from the javascript object, using form submit, and modify the form tag to fire the function on submit. That's how it works for ckEditor, I assumeit may be the same for tiny MCE. On ckEditor, the toolbar save button is fake, so you have to make your own button, and function, or wire up the form tag to make the toolbar button work.