function getRandomInt(startInt, endInt) {
  var val;
  do {
    val = Math.random() + "";
    val = eval(val.substr(2,endInt.toString().length));
  } 
  while (!(val >= startInt && val <= endInt))
  return val;
}

function showRandomBanner() {
  var imgNumber = getRandomInt(0,7);
  banner = '<img src="'+ actionBanners[imgNumber] +'" id="banner00" height="740" width="826" border="0" /><br />';
  return banner;
}