1. I'll experiment again and let you know. Yes, I could zip and upload my gallery on my server for download, but I don't want to make the link public...
OK, please let me know how you get on. If you would like to send me your gallery, just let me know and I'll email you with details of how to get the gallery to me.
2. I got it.
That's great!
3 and new : I have only a MacBook Air : anyway to emulate the retina display for Juicebox ? I have tried to change layout.css.devPixelsPerPx value in about:config on Firefox but it doesn't seem trigger the Media Queries to change the image size displayed...
layout.css.devPixelsPerPx seems to have the effect of changing the browser's zoom factor (but does not change the apparent pixel density in a way that Juicebox can detect).
If you want to test your Multi-Size gallery, then try using JavaScript in your gallery's web page to fool the browser into reporting a custom pixel density value.
Try adding the following code to your gallery's web page:
<script>
window.devicePixelRatio = 2;
</script>
I would use this for testing purposes only and I would not recommend leaving this in your web page as it may report a false value (depending on the real pixel density) which would result in Juicebox serving up a less appropriate image size.