Im working on an epub, that has an Button on every page where you can click an show/hide an rectangle.
For that I created a master page, where I placed the button and rectangle. What I can´t figure out is, how to make it work, that the button "remembers" its state, when turning the page. What I mean by this is, if the User clicks the button to hide the rectangle e.g. on page 7, the rectangle should not be displayed on page 8 also. If the user clicks again to show the rectangle, the rectangle is shown on the following pages, until he clicks again to hide it.
So basically, I´m looking for a way to "remeber" if the button was cliked or not, to display or hide the rectangle in the whole epub when browsing through it, not just on the current page. I tried doing it with the form element data plugin because with it you can remember what the user clicked in a form, but that didn´t worked for me for this problem.
