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  function shapka(n)  
  {document.write('<img border="0" src="/logo/'+n+'.gif">');}  
  var h=(new Date()).getHours();  
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  if (h > 6 && h < 12) shapka('2');  
  if (h > 11 && h < 19) shapka('3');  
  if (h > 18 && h < 24) shapka('4');  
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