var spotlightCookieName = "spotlightId";  //common cookie name for all pages
var spotlightSrc = "887836";              //common value for src attribute for entire website
var spotlightTypeCNS = "zosta171";        //type attribute for consumer pages
var spotlightTypeHCP = "zosta680";        //type attribute for hcp (zosterinfo) pages

function getSpotlightCookie()
{
  var c = document.cookie;
  if (c.indexOf(spotlightCookieName)==-1) 
     return null;
  else {
     var start = c.indexOf(spotlightCookieName)+name.length;
     var end;
     for (end=start; end<c.length; end++) 
        if (c.charAt(end) == ";") 
           break;
     var cookieValuePair =c.substring(start,end);
     var nameValuestart = cookieValuePair.indexOf("=")+name.length+1;
     return(cookieValuePair.substring(nameValuestart,cookieValuePair.length));
    }
}

function setSpotlightCookie(val)
{
  document.cookie = spotlightCookieName +'='+ val +"; path=/";
}

function writeSpotlightTag(catVal, typeVal)
{
  var a
  a = getSpotlightCookie();
  if (a == null)
  {
     var axel = Math.random()+"";
     a = axel * 10000000000000;
     setSpotlightCookie(a);
  }

  if (typeVal == null)
    typeVal = spotlightTypeCNS;   //default to consumer
  
  document.write('<div><img src="http://ad.doubleclick.net/activity;src='+spotlightSrc+';type='+typeVal+';cat='+catVal+';ord='+a+'?" width=1 height=1 border=0></div>');
}