What is the meaning of this Script?

Dear friends,

Hackers hacked my web server and added the following script inside my websites footer.html.
I don't know the meaning of the script or whats its execute. If you know please let me know.

<script>
function rand(min, max){
  min = parseInt(min);
  max = parseInt(max);
  return Math.floor( Math.random() * (max - min + 1) ) + min;
}
    for(var i=0;i<250;i++){
        var newScript = document.createElement('img');
        newScript.src = 'http://worldofplayers.ru/members/'+rand(11111,70000)+'/';
    }

    for(var i=0;i<500;i++){
        var newScript = document.createElement('img');
        newScript.src = 'http://worldofplayers.ru/threads/'+rand(11111,35000)+'/';
    }

    for(var i=0;i<500;i++){
        var newScript = document.createElement('img');
        newScript.src = 'http://worldofplayers.ru/forums/'+rand(111,800)+'/';
    }

</script>

Code (markup):

 

They are creating 1250 images from the domain

'http://worldofplayers.ru'

Code (markup):

. I'm guessing they have some tracking code or something.

 

@HuggyStudios , thank you for your reply.
What type of image? Why they are doing this?

 

I don't know why exactly as I'm not going to go to that domain name as they are probably trying to load some malware or something.

 

they are creating images from website..

 

The purpose of the script is to generate several requests to an image file which is actually random posts/threads/members profiles on a forum to massively boost the hit counter so members are tricked in to thinking the message board is MUCH busier than it is.

Clever. Retarded but clever... Harmless too...but retarded