var http_request = false;

function makePOSTRequest(url, parameters)
{
	http_request = false;
	if (window.XMLHttpRequest)
	{
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType)
		{
			http_request.overrideMimeType('text/xml');
		}
	}
	else if (window.ActiveXObject)
	{
		try
		{
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
            }
			catch (e)
			{
			}
		}
	}
	if (!http_request)
	{
		alert('Cannot create XMLHTTP instance');
		return false;
	}
	
	document.getElementById("expect").style.backgroundColor="#fee";
	
	http_request.onreadystatechange = alertContents;
	http_request.open('POST', url, true);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.setRequestHeader("Content-length", parameters.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(parameters);
}

function alertContents()
{
	if(http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{
			var response = http_request.responseText;
			document.getElementById('expect').innerHTML = response;
			document.getElementById("expect").style.backgroundColor="#fff";
		}
		else
		{
			alert('There was a problem with the request.');  //change this to .innerHTML
		}
	}
}

function get(obj)
{
	var poststr =  "team=" + encodeURI( document.getElementById("team").value ) +
				"&inning=" + encodeURI( document.getElementById("inning").value ) +
				"&outs=" + encodeURI( document.getElementById("outs").value ) +
				"&bases=" + encodeURI( document.getElementById("bases").value ) +
				"&run_diff=" + encodeURI( document.getElementById("run_diff").value );
	
	makePOSTRequest('expect_output4.php', poststr);
}