To Implement this you should have some images on web page. So to do that Follow these steps
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Go to google.com
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Select images tab, and then search Sun or click on below code
http://images.google.co.in/images?hl=en&q=sun&btnG=Search+Images&gbv=2
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Now you have lot of images on web page.
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Now Paste below given code in address bar
javascript:R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24;x4=300;
y4=200; x5=300; y5=200; DI= document.images; DIL=DI.length;
function A(){for(i=0; i<DIL; i++){DIS=DI[i].style;
DIS.position='absolute'; DIS.left=Math.sin(R*x1+i*x2+x3)*x4+x5;
DIS.top=Math.cos(R*y1+i*y2+y3)*y4+y5}R++}setInterval('A()',5);void(0)