<script type="text/javascript">  

  /***********************************************  
  * Frequency Cap Content script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)  
  * This notice MUST stay intact for legal use  
  * Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code  
  ***********************************************/  

  //["ID of content to frequency cap", "Display frequency interval (full hours only)"]  
  var capcontent=new Array()  
  capcontent[0]=["myad", "1 hr"]  
  capcontent[1]=["mynote", "3 hr"]  

  function get_cookie(Name) {  
var search = Name + "="  
var returnvalue = "";  
if (document.cookie.length > 0) {  
offset = document.cookie.indexOf(search)  
if (offset != -1) { // if cookie exists  
offset += search.length  
end = document.cookie.indexOf(";", offset);  
if (end == -1)  
end = document.cookie.length;  
returnvalue=unescape(document.cookie.substring(offset, end))  
}  
}  
return returnvalue;  
  }  

  function resetcookie(id){  
  var expireDate = new Date()  
  expireDate.setHours(expireDate.getHours()-10)  
  document.cookie = id+"=;path=/;expires=" + expireDate.toGMTString()  
  }  

  function showorhide(caparray){  
  if (get_cookie(caparray[0])!='')  
  document.write("#"+caparray[0]+"{display: none;}\n") //CSS TO HIDE CONTENT BTW FREQUENCY  
  else{  
  var expireDate = new Date()  
  expireDate.setHours(expireDate.getHours()+parseInt(caparray[1]))  
  document.cookie = caparray[0]+"="+parseInt(caparray[1])+";path=/;expires=" + expireDate.toGMTString()  
  }  
  }  

  document.write('<style type="text/css">\n')  

  for (i=0; i<capcontent.length; i++){  
  if (get_cookie(capcontent[i][0])!=parseInt(capcontent[i][1]))  
  resetcookie(capcontent[i][0])  
  showorhide(capcontent[i])  
  }  

  document.write('</style>')  

  </script>

<div id="myad">  
  Ваш контент, который будет обновляться раз в час  
  </div>

<table id="mynote">  
  Ваш контент, который будет обновляться раз в три часа  
  </table>