refreshing page

i have created a gallery when i refresh page or click on a photo whilst the images are being downloaded part of the page under the first couple of thumbnails is slower to load this does not seem to happen in ie but does in firefox. is this just something that will happen or can i prevent this happening.

[url]http://www.boavistaexperience.com/gallery/index.php[/url]

thanks

Also in #CSS _↴