var i = 0;
var j = 0;
var running = 0;

function shuffle() {
  running = 1;
  document.getElementsByTagName('body')[0].style.cursor = 'wait';
  if(i==0) { i = 10 + (Math.round(Math.random())); j=50; }
  if(document.getElementById('yes').className == 'yes0') {
    document.getElementById('yes').className = 'yes1';
    document.getElementById('no').className = 'no0';
  } else {
    document.getElementById('yes').className = 'yes0';
    document.getElementById('no').className = 'no1';
  }
  i--;
  j-5;
  if(i==0) {
    running = 0;
    document.getElementsByTagName('body')[0].style.cursor = 'auto';
  } else {
    window.setTimeout('shuffle();',i*j);
  }
}