czcionka='small'; 
odstep="100%";
document.write('<style type="text/css">');
if(document.all) { czcionka='x-small' };
if(document.layers) { odstep="90%";
document.write("body{background-attachment: fixed ;}")}
document.write("ul, .opis {font-size:"+czcionka+"; font-family:Tahoma, Arial; color: indigo;") 
  document.write ("line-height:"+odstep+";}");
document.write(".wartosci {font:"+czcionka+" Tahoma, Arial, sans-serif; color: red; }"); 
document.write(".czysc {font:"+czcionka+" Verdana, Tahoma, Arial; color: black; }"); 
document.write("</style>");