product page, show thumbnail section even only have 1 image

[aaront1]

I am using PS 1.5.5 the default theme.

 

On the product page,

 

Right now it seems that when there is one image, the thumbnail section is hidden.

It only shows when there is more than 1 image.

Is there a way to show the thumbnail section even if it only has 1 image?

 

I look for the product.js file and search for id=views_block , but not too sure where is the hidden class add to it.