Problem loading applet in website

I'm having a problem with my applet~ it runs in the AppletViewer, but not on the website. (I've checked a few pages into this forum and couldn't find anything that quite helped)
I think I know what the error is--it won't open the image files because it believes they are restricted. This is the error I receive in the Java Console:
java.security.AccessControlException: access denied (java.io.FilePermission ronkus001.gif read)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkRead(Unknown Source)
     at sun.awt.SunToolkit.getImageFromHash(Unknown Source)
     at sun.awt.SunToolkit.getImage(Unknown Source)
     at javax.swing.ImageIcon.<init>(Unknown Source)
     at ImgArray.<init>(ImgArray.java:12)
     at RonkusBrowser.<init>(RonkusBrowser.java:13)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     at java.lang.reflect.Constructor.newInstance(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
I have gone back and added <PARAM> tags to the HTML file (as well as modifying my code so it will look for them and USE them), but there is no difference.
NOTE:
1) I have installed the latest Java plugin.
2) Other applets run, so it's my code, not FireFox (which I am running)
3) I have checked that all of the needed classes and files are uploaded. I uploaded in binary format because I read somewhere that doing so helps. (I don't really know how that works)
There are 5 total classes in my program, so the applet calls the other classes. Does this need to be modified somehow, maybe?
Any advice on how to fix this?

Sorry to keep reposting like this, but I just checked and found that the Param version doesn't run in AppletViewer anyway. Without the param tag, I still have the exact same error.
So, now my code does not require parameters and none are being given.
this is my page code:
<applet code="RonkusBrowser.class" width="940" height="415">
</applet>

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