$min = 0;
	$max = 5;
	
	var rand = Math.random()*($max-$min);
	$num = Math.round($min+rand);

function randomImg() {
	$target="header-img";
	$url = "/success.php?num=" + $num;
  document.getElementById($target).innerHTML = '';
  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
  } else if (window.ActiveXObject) {
    req = new ActiveXObject("Microsoft.XMLHTTP");
  }
  if (req != undefined) {
    req.onreadystatechange = function() {showRequest($target);};
    req.open("GET", $url, true);
    req.send("");
  }
}  

function showRequest(target) {
  if (req.readyState == 4) { // only if req is "loaded"
    if (req.status == 200) { // only if "OK"
      document.getElementById(target).innerHTML = req.responseText;
	  initImage();
	  if ($num != $max){
		  $num ++
	  }else{
		  $num = 0;
	  }
    } else {
      document.getElementById(target).innerHTML="Error...";
    }
  }
}
function initImage() {
  imageId = 'img';
  image = document.getElementById(imageId);
  setOpacity(image, 0);
  image.style.visibility = 'visible';
  fadeIn(imageId,0);
  window.setTimeout("fadeOut('img','100')", 8000);
  document.getElementById('jsWarning').style.visibility = 'hidden';
}

function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}

function fadeIn(objId,opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 100) {
      setOpacity(obj, opacity);
      opacity += 5;
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 50);
    }
  }
}

function fadeOut(objId,opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
	if (opacity >= 0) {
      setOpacity(obj, opacity);
      opacity -= 5;
      window.setTimeout("fadeOut('"+objId+"',"+opacity+")", 50);
	}
	if (opacity == 0) {
      window.setTimeout("randomImg()",2000);
	}
  }
}
window.onload = function() {randomImg()}