function changeButton(imageName, buttonName){
    buttonName = $(buttonName);
    buttonName.src=imageName;
}

function zzz (naptime){
   naptime = naptime * 1000;
   var sleeping = true;
   var now = new Date();
   var alarm;
   var startingMSeconds = now.getTime();

   while(sleeping){
      alarm = new Date();
      alarmMSeconds = alarm.getTime();
      if(alarmMSeconds - startingMSeconds > naptime){ sleeping = false; }
   }      
}
 
function cycleImages(picID) {
   changeButton('photos/dj/salut.jpg', picID);
   zzz(5);

}