Mediatracker is not working in browser

I want to load 2 JEPGs and show them in an applet. Therefore I'm using mediatracker to wait till all Images are loaded like in the following code. When I use the appletviewer everything is working fine, but when I upload the applet and view it with a browser it doesn't get through the waitForAll()... And so they don't appear on the screen at all...
Why is that ? Does anyone know where the error is ?
Thx
Feleex
Image backgr1,backgr2;
backgr1 = getToolkit().getImage("SHHlinear.jpg");
backgr2 = getToolkit().getImage("SHHcycle.jpg");
MediaTracker mt = new MediaTracker(this);
mt.addImage(backgr1, 0);
mt.addImage(backgr2, 0);
try {
mt.waitForAll();
} catch (InterruptedException e) {}

You can't use toolkit in applets. Use just getImage() instead of getToolkit().getImage()

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