function setCookie(cookieName, cookieValue, cookiePath, cookieExpires) 
   {cookieValue = escape(cookieValue);
   if(cookieExpires == "") 
     { var nowDate = new Date();
     nowDate.setMonth(nowDate.getMonth() + 3);   
     cookieExpires = nowDate.toGMTString(); }
   if (cookiePath != "") {  cookiePath = ";Path=" + cookiePath;}
     document.cookie = cookieName + "=" + cookieValue + ";expires=" + cookieExpires + cookiePath;}
function getCookie(name) { var cookieString = document.cookie; 
   var index = cookieString.indexOf(name + "=");
   if (index == -1) { return null; }
   index = cookieString.indexOf("=", index) + 1; 
   var endstr = cookieString.indexOf(";", index);
   if (endstr == -1) {endstr = cookieString.length; }
   return unescape(cookieString.substring(index, endstr));}
function doPopup(){ var ezine = getCookie('subShowntt');
   setCookie('subShowntt', 'true', '', '');
   if(ezine == null) {  //Show the popup window
     window.open('ezine.html', 'ezineWin', 'width=400,height=300'); }}