[Plugin: Lightbox Plus] Captions Spilling Over

Hello,

My captions are spilling over and overlapping the picture when the image is in lightbox mode. The captions are covering the image, the prev and next links, and the close link. It is happening on vertically oriented images. Because the title is rather long, it is split into two lines. The bottom line is ok, but the top line overlaps everything.

How do I make the space allowed for the captions bigger? So that in fits at least three lines of text without overlapping anything?

Thanks!!

http://wordpress.org/extend/plugins/lightbox-plus/