function findElement(n) {
  return document.all ? document.all(n) : document.getElementById(n);
}

function changeImage(id) {
  var obj = findElement(id);

  if(obj.runtimeStyle){
    var image = obj.src; 
    obj.src = "http://www.yunoyama-onsen.com/images/blank.gif";
    obj.runtimeStyle.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + image + '", sizingmethod="image");';
  }
}


function changeTopPage(id) {
  var banner = findElement(id);
  banner.style.backgroundImage = 'url("' + getHeaderPicFileName() + '")';
  banner.style.backgroundRepeat = 'no-repeat';
}

function init() {
  changeImage('season-img');
  changeTopPage('block_season-img');
}