imageviewer.html

<SCRIPT LANGUAGE="Javascript">
			function pick_image() {
				var result           = 'user/images/';
				var random			 = Math.floor((Math.random() * 32) + 1);
				var picked			 = '.gif';
				for ( var i = 0; i < 1; i++ ) {
					result += random;
					result += picked;
				}
				return result;
				}
</SCRIPT>

<SCRIPT LANGUAGE="JavaScript">

function showImage(){

document.write('<img name="'+Math.floor((Math.random() * 9001) + 1)+'" src="'+pick_image()+'">');
}

//  End -->
</script>

</HEAD>
<style>
img{
  display:block;
  width:100%; height:100%;
  object-fit: fill;
}
</style>
<!-- STEP TWO: Copy this code into the BODY of your HTML document  -->

<BODY>

<SCRIPT LANGUAGE="JavaScript">


<!-- Begin
showImage();
//  End -->
</script>