PAGE LINKS/BUTTONS WON'T WORK UNTIL PAGE FULLY LOADED

[Fenno]

I have an ASP.NET web application that contains some pictures that
sometimes take several seconds to load. These pictures are contained in
user controls on the page (if that makes any difference).

The problem is that whilst the page is still loading, it is impossible
to click on any of the links/buttons on the page. If you do click on a
link/button, nothing happens. The site in question is
http://www.shopandcrop.com.au However, once the page and images are
fully loaded, the page performs as normal when a link/button is
clicked.

This is becoming very irritating as I have tried several things to stop
this from happening, but no luck! Users on slow modems would be worst
affected by this behaviour, as they can't do anything until they wait
for the page to load completely.

Any ideas greatly appreciated.