main file

<script type="text/javascript">
	function calculateNum(n, r)
	{
		var hasVal = false;
		var number = n;
		var result = r;

		if(window.XMLHttpRequest)// code for IE7+, Firefox, Chrome, Opera, Safari
			xmlhttp=new XMLHttpRequest();
		else// code for IE6, IE5
			xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

		xmlhttp.onreadystatechange=function()
		{
			if(xmlhttp.readyState==4 && xmlhttp.status==200)
			{
				var next = xmlhttp.responseText;
				alert("got response of "+next);
				if(next == -1)
					alert("err");
				else
					return next;
				//hasVal = true;
			}
		}
		xmlhttp.open("GET","storeResults.php?n="+number+"&r="+result,false);
		xmlhttp.send();

		if(hasVal)
			return next;
	}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<script type="text/javascript">
	var n = parseFloat(<?php echo $startWith ?>);
	var r = 1/n;
	var nextNum = calculateNum(n, r);
	alert("returned value of: "+nextNum);
	while(confirm("1 / "+n+" = "+r+"\nContinue?"))
	{
		n = nextNum;
		r = 1/n;
		nextNum = calculateNum(n, r);
	}
	alert("outside while loop");
</script>