[九天]

<SCRIPT language=JavaScript>
function setCookie(name, value, expire) {   
  window.document.cookie = name + "=" + escape(value) + ((expire == null) ? "" : ("; expires=" + expire.toGMTString()));
}
function getCookie(Name) {   
   var search = Name + "=";
   if (window.document.cookie.length > 0) { // if there are any cookies
     offset = window.document.cookie.indexOf(search);
  if (offset != -1) { // if cookie exists
       offset += search.length;          // set index of beginning of value
    end = window.document.cookie.indexOf(";", offset)          // set index of end of cookie value
    if (end == -1)
      end = window.document.cookie.length;
    return unescape(window.document.cookie.substring(offset, end));
     }
   }
   return null;
}

function register(name) {
  var today = new Date();
  var expires = new Date();
  expires.setTime(today.getTime() + 1000*60*60*24);
  setCookie("witcom", name, expires);
}
  var exitURL="http://";
function openWin() {
  var c = getCookie("witcom");
  if (c != null) {
    return;
  }
  register("9free");
  var featureStr="''";
    featureStr="'top=0,left=0,width=800,height=600,toolbar=yes, menubar=no, scrollbars=no, resizable=no, location=no, status=no,center:no'";
  self.focus();
  var ExitWindow = window.open(exitURL,'', featureStr);
    ExitWindow.focus();
}
openWin();
window.focus()
</SCRIPT>

<!--滑动展开-->
<script type="text/javascript"> 
var intervalId = null; 
function slideAd(id,nStayTime,sState,nMaxHth,nMinHth){ 
  this.stayTime=nStayTime*1000 || 3000; 
  this.maxHeigth=nMaxHth || 515; 
  this.minHeigth=nMinHth || 1; 
  this.state=sState || "down" ; 
  var obj = document.getElementById(id); 
  if(intervalId != null)window.clearInterval(intervalId); 
  function openBox(){ 
   var h = obj.offsetHeight; 
   obj.style.height = ((this.state == "down") ? (h + 2) : (h - 2))+"px"; 
    if(obj.offsetHeight>this.maxHeigth){ 
    window.clearInterval(intervalId); 
    intervalId=window.setInterval(closeBox,this.stayTime); 
    } 
    if (obj.offsetHeight<this.minHeigth){ 
    window.clearInterval(intervalId); 
    obj.style.display="none"; 
    } 
  } 
  function closeBox(){ 
   slideAd(id,this.stayTime,"up",nMaxHth,nMinHth); 
  } 
  intervalId = window.setInterval(openBox,10); 
} 
</script>
<!--滑动展开-->

想要的效果是 24小时 只滑动展开一次广告