var play="false"
var num_days=1
function ged(noDays){
var today=new Date()
var expr=new Date(today.getTime()+noDays*24*60*60*1000)
return expr.toGMTString()}
function readCookie(cookieName){
var start=document.cookie.indexOf(cookieName)
if(start==-1){
document.cookie="heardIt=yes; expires="+ged(num_days)
play="true"}
return play}