joomla - Thumbnails question

On my Drupal page, I'm currently inserting gallery thumbnails in my nodes-stories with the following code:

[G2:31 n=100 type=randomImage size=300 class=name frame=name album_frame=name item_frame=name]

Two questions:
1) Right now when I click on a thumbnail, it loads the full-size image within the node itself. I'd like to change it so that when I click on a thumbnail it will send the user to the gallery instead, or at least open the image in a pop-up window.
2) The thumbnails are currently displayed vertically (stacked on top of each other in a column), but I'd like to have the thumbnails display horizontally instead.

Any help/suggestions would be most appreciated!