hello again, I've got another couple of suggestions for this.
When I get to the end of a book and drag the last page over to the left, everything vanishes and it looks as if something has gone wrong. I'm guessing this is because, when there is an uneven number of pages in the PDF, there is nothing on the reverse of the last page. I'm wondering if the module could just put a background colour on the last page when this happens... just so that it doesn't look broken and there is then something obvious to drag back to the right again.
I'm also trying to improve first-time use of the module for visitors, and although it's clear for us, it's still a bit cryptic for some. Therefore a possible enhancement would be to optionally allow placement of the controls at the top of the module rather than below.
Perhaps mouse operations could be made more obvious. For example, if there were tooltips on the mouse cursor when the mouse moved over the page edge and corners "Click to turn page" and Click and drag to turn page" and when zoomed in it could briefly say "Click to zoom out".
The zooming in particular requires some effort to understand because it is a different operation to go in than it is to go back out. This could be helped if part of the pages were able to be clicked to make it zoom in. If the mouse cursor could change to a magnifier or a tooltip said "Click to zoom in" then that would make it clear and it would also match the zoom-out operation.
Perhaps if the mouse cursor were able to change to simple magnifier and left/right pointer icons, similiar to the buttons below the pages, then that would also be good.
I don't really know what is possible within the Flash file, so the suggestion here is just to enhance the 'hand-holding' for users when they have to use the module to read content. You can probably think of ways to do this, whilst keeping the clean appearance of the module.
Hope all that makes sense.
Regards Rob