<script type="text/javascript">  
date = new Date();  
a = date.getHours();  
if (a > 9 && a < 15){document.write('<img width="100%" align="center" src="http://cs74.clan.su/logo/logotip_23.jpg" border="0" />');}  
if (a > 15 && a < 17){document.write('<img width="100%" align="center" src="http://cs74.clan.su/logo/logotip_24.gif" border="0" />');}
if (a > 17 && a < 19){document.write('<img width="100%" align="center" src="http://cs74.clan.su/logo/logotip_25.png" border="0" />');}     
if (a > 19 && a < 21){document.write('<img width="100%" align="center" src="http://cs74.clan.su/logo/logotip_26.jpg" border="0" />');}
if (a > 21 && a < 23){document.write('<img width="100%" align="center" src="http://cs74.clan.su/logo/logotip_27.jpg" border="0" />');}     
      
else {document.write('<img width="100%" align="center" src="http://cs74.clan.su/logo/logotip_28.jpg" border="0" />');}  
</script>

<script type="text/javascript">  
function shapka(n)  
{document.write('<img border="0" src="/logo/'+n+'.gif">');}  
var h=(new Date()).getHours();  
if (h > 23 || h <7) shapka('1');  
if (h > 6 && h < 12) shapka('2');  
if (h > 11 && h < 19) shapka('3');  
if (h > 18 && h < 24) shapka('4');  
</script>

<script type="text/javascript">  
date = new Date();  
a = date.getHours();  
if (a > 7 && a < 21) {  
document.write('<img src="http://путь к папке с шапками/logo.gif" border="0" />');  
} else {document.write('<img src="http://путь к папке с шапками/logo2.gif" border="0" />');}  
</script>