Userscripts.org

I patched the handKeyPress() like the following:

=============================================================
function handleKeyPress(e) {
var code = (e.keyCode ? e.keyCode : e.which);
if (fz_activeThumb != null && (code == 39 || code == 37)) {
var imgs = jQuery("img").filter(function(index) { return unWrap(this).canZoom; });
var ix = imgs.index(fz_activeThumb);
zoomMeOut(fz_activeThumb);
ix = ix + (code == 37 ? -1 : +1);
ix = (ix + imgs.length) % imgs.length;
zoomMe(imgs.get(ix));
}

/*-----------------ESC KEYPRESS------------------*/
if (fz_activeThumb != null && (code == 27)) {
zoomMeOut(fz_activeThumb);
return 0;
}
/*-----------------------------------------------*/
}
=============================================================

Hope, you would like to keep it in your next version. Otherwise, every time when you are done browsing through the photos, the window needs to be closed by a mouse button, while moving to left/right photos can be nicely done by pressing left/right arrow keys.