script bug...

Hello, what do you need to do to this script below to stop it from redirecting to the index page? I know it has something to do with: window.location.href = "index.html?status=1";
at the bottom but I'm not sure how you do this. Do you just remove it or something? How should the code look when it's setup not to redirect users to the index.html page?

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<script language="javascript">

function getURLParameter(name) {
return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search) || [null, ''])[1].replace(/\+/g, '%50')) || null;
}
document.cookie = "POSTAff2Cookie="+getURLParameter('a_aid')+"_1 ";

OrderID=Math.floor(Math.random() * 100) + 1 ;
ProductID=Math.floor(Math.random() * 100) + 1 ;
TotalCost=Math.floor(Math.random() * 100) + 1 ;
data = "TotalCost="+TotalCost+"&ProductID="+ProductID+"&O rderID="+OrderID;
console.log(data);
document.write("<img src='http://xxxxxxxx/xxxxx-scripts/xxxxx.php?"+data+"' border='0' width='1' height='1'>");
setTimeout(function() {
window.location.href = "index.html?status=1";
}, 4000);

//-->
</script>