Question about Alt Codes

Is there a way to get the img alt onto the slider images without having it be visibly rendered anywhere? I have manually entered alternate text for each slider image when uploading, but that doesn’t seem to carry over. If I enter something for “Title” or “Description” inside the huge-it slider, that works for displaying the alt code, but it also makes that text visible on top of the image and I don’t like the way it looks.

Perhaps there’s a way to hide the title or description elements via css or javascript? Anybody know?

The page I need help with: [log in to see the link]