After downloading simpleviewer and installing it, I put it on the website, but it didn't work. I looked at the FAQ's and came across the 'Active Content Update' Issue. It states:
Upload the flashobject.js file that comes in the latest SimpleViewer download to the same folder as your gallery"
Now, I have just downloaded the latest version but there is no file named 'flashobject.js' in sight. So now I cannot fix the problem...