var session = "";
var cvid = "";
var cid = "";
var path = "";
var responseTime = "";
var searchWord = "";
var numberOfHits = "";
var filetype = "";
var title = "";
var groups = "";
var previousSessionId = "";
var guid = "";
var url  = "";
var iswritten = false;

function writeStatistics() {
   var randomNum = Math.floor(Math.random()*100000) ;

   var nmstatCookie = Get_Cookie('nmstat');
   if (nmstatCookie==null) {
      storeMasterCookie();
      storeIntelligentCookie('nmstat',session+randomNum);
   }
   nmstatCookie = Get_Cookie('nmstat');
   if (nmstatCookie!=null)
   previousSessionId = nmstatCookie;

   var screenResolution = window.screen.width + "x" + window.screen.height;
   if (title=="") {title = escape(document.title);}
   else {title = escape(title);}
   var referer = escape(top.document.referrer);
   if (url=="")
      url = escape(location.href);
   else
   	url = escape(url);
   if (!iswritten) {
 	  document.write("<img style=\"width:1px;height:1px;position:absolute\" src=\"//us1.siteimprove.com/image.aspx?url=" + url + "&cid="+escape(cid)+"&cvid="+escape(cvid)+"&session="+session+"&title="+title+"&path="+escape(path)+"&rt=" + escape(responseTime) + "&ref=" + referer + "&res="+escape(screenResolution)+"&sw="+escape(searchWord)+"&hits="+escape(numberOfHits)+"&ft="+escape(filetype)+"&groups="+escape(groups)+"&rn="+randomNum+"&prev="+escape(previousSessionId)+"&guid="+escape(guid)+"\" hspace=0 vspace=0 alt='' width=1 height=1 border=0>");
 	  iswritten = true;
	}
}


function Get_Cookie(name) {
    var start = document.cookie.indexOf(name+"=");
    var len = start+name.length+1;
    if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
    if (start == -1) return null;
    var end = document.cookie.indexOf(";",len);
    if (end == -1) end = document.cookie.length;
    return unescape(document.cookie.substring(len,end));
}

function Set_Cookie(name,value,expires,path,domain,secure) {
    document.cookie = name + "=" +escape(value) +
        ( (expires) ? ";expires=" + expires.toGMTString() : "") +
        ( (path) ? ";path=" + path : "") + 
        ( (domain) ? ";domain=" + domain : "") +
        ( (secure) ? ";secure" : "");
}

function Delete_Cookie(name,path,domain) {
    if (Get_Cookie(name)) document.cookie = name + "=" +
       ( (path) ? ";path=" + path : "") +
       ( (domain) ? ";domain=" + domain : "") +
       ";expires=Thu, 01-Jan-70 00:00:01 GMT";
}

var today = new Date();
var zero_date = new Date(0,0,0);
today.setTime(today.getTime() - zero_date.getTime());

var todays_date = new Date(today.getYear(),today.getMonth(),today.getDate(),0,0,0);
var expires_date = new Date(todays_date.getTime() + (8 * 7 * 86400000));

function storeMasterCookie() {
    if (!Get_Cookie('MasterCookie'))
        Set_Cookie('MasterCookie','MasterCookie');
}

function storeIntelligentCookie(name,value) {
    if (Get_Cookie('MasterCookie')) {
        var IntelligentCookie = Get_Cookie(name);
        if ((!IntelligentCookie) || (IntelligentCookie != value)) {
            Set_Cookie(name,value,expires_date);
            var IntelligentCookie = Get_Cookie(name);
            if ((!IntelligentCookie) || (IntelligentCookie != value))
                Delete_Cookie('MasterCookie');
        }
    }
}