function setCookie(name, value, expires, path, domain, secure) {
var curCookie = name + "=" + escape(value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "")
if ((name + "=" + escape(value)).length <= 4000)
document.cookie = curCookie
else
  document.cookie = curCookie
}

function getCookie(name) {
var prefix = name + "="
var cookieStartIndex = document.cookie.indexOf(prefix)
if (cookieStartIndex == -1)
return null
var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length)
if (cookieEndIndex == -1)
cookieEndIndex = document.cookie.length
return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex))
}

function update(){
 var view; 
 var today;
 var expiry = new Date();
 expiry.setTime(expiry.getTime() + 24*60*60*1000*15);

 view = getCookie('views');
 if  (view != null) {
     setCookie('views',  ++view,  expiry, '' , '', '');
 }
 else{
    view = 1;
    setCookie('views', view,  expiry, '' , '', '');
 }
}

update();