I've had a quick play adjusting the 'Ribbon_Fullsize common.css file' and I still have a few issues.
Some images overlap, I was wondering if it might be better to physically reduce the dimensions of the pictures and upload again.
The backgound fits the page now, but I need to get the images to fit the background.
With the thumbs set to 6 the forward arrow drops a line, set at 5 and it's OK, there must be a 'width' set somewhere but I can't seem to find it.
In the index.php file under 'Ribbon_Fullsize' what does line 23 control?
#outerWrapper { width: 895px; margin: 20px auto; }
By altering the width I didn't see any changes.
My attempt is here: pics.php