Website, DB, & Software Developers

I was thinking that instead of centering the gallery within a centered container on the page, it might work just fine to make the gallery the same width (or close to it) as the container. Just use this for the full width:

[div class="excerpt" style="border: 1px solid #bfbfbf; border-radius:0.4615em;"].ad-gallery {
    width:800px;
}
Or if it seems to be better a little narrower than the page container:

[div class="excerpt" style="border: 1px solid #bfbfbf; border-radius:0.4615em;"].ad-gallery {
    width:750px;
    margin-left:auto !important;
    margin-right:auto !important;
}
And you can always adjust the height as needed as well:

[div class="excerpt" style="border: 1px solid #bfbfbf; border-radius:0.4615em;"].ad-gallery .ad-image-wrapper {
    height:500px;
}
You'll probably have to play around with it a little to be happy with the position, size, color, etc. - but that underlying gallery script is pretty cool.