Indexhibit Support

Hi,

In some instances, the last images in exhibits using the horizontal format in 2.1 collapse to a new line. I had to change the following line in the format.horizontal.php file:

1. $this->text_width = $this->text_width - (2 * $margin);

to:

1. $this->text_width = $textw - (2 * $margin);

to fix this behavior.

Noted! Thanks!