/*  Rollover  */
(function(onLoad) {
    try {
        window.addEventListener('load', onLoad, false);
    } catch (e) {
        window.attachEvent('onload', onLoad);
    }
})(function() {
  var tags = ["img","input"];
  for( var i=0, len=tags.length; i<len; i++ ) {
    var over = function() { this.src = this.src.replace('_off.', '_on.'); };
    var out  = function() { this.src = this.src.replace('_on.', '_off.'); };
    var el = document.getElementsByTagName(tags[i]);
    for (var j=0, len2=el.length; j<len2; j++) {
      var attr = el[j].getAttribute('src');
      if (!el[j].src.match(/_off\./)&&attr) continue;
      el[j].onmouseover = over;
      el[j].onmouseout  = out;
    }
  }
});


/*  backToTop  */
function backToTop() {
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 25);
  }
}

/*  imageUp  */
function Imgche(ado)
{
document.space.src=ado;
}

/*  imageCha  */
function changeImage1(){
    document.myimg.src="images/oubo_02.gif";
}
function changeImage2(){
    document.myimg.src="images/oubo_01.gif";
}
function changeImage3(){
    document.myimg.src="images/oubo_05.gif";
}
function changeImage4(){
    document.myimg.src="images/oubo_04.gif";
}