// holds an instance of XMLHttpRequest
var xmlHttp = createXmlHttpRequestObject();
// creates an XMLHttpRequest instance
function createXmlHttpRequestObject()
{
// will store the reference to the XMLHttpRequest object
var xmlHttp;
// this should work for all browsers except IE6 and older
try
{
// try to create XMLHttpRequest object
xmlHttp = new XMLHttpRequest();
}
catch(e)
{
// assume IE6 or older
try
{
xmlHttp = new ActiveXObject("Microsoft.XMLHttp");
}
catch(e) { }
}
// return the created object or display an error message
if (!xmlHttp)
alert("Error creating the XMLHttpRequest object.");
else
return xmlHttp;
}
	// called to read a file from the server
	
	function featprocess()
	{
		
		var val = document.frmtype.type.value;
	
	
	
		// only continue if xmlHttp isn't void
	if (xmlHttp)
	{
	// try to connect to the server
	try
	{
	
	xmlHttp.open("GET", "design_features.php?aid="+val, true);
	xmlHttp.onreadystatechange = handleRequestStateChangefeat;
	xmlHttp.send(null);
	}
	// display the error in case of failure
	catch (e)
	{
	alert("Can't connect to server:\n" + e.toString());
	}
	}
	}
	// function that handles the HTTP response
	function handleRequestStateChangefeat()
	{
	// obtain a reference to the <div> element on the page
	//myDiv = document.getElementById("myDivElement");
	// display the status of the request
	if (xmlHttp.readyState == 1)
	{
		document.getElementById("div_loading").style.display="block";
	}/*
	else if (xmlHttp.readyState == 2)
	{
	myDiv.innerHTML += "Request status: 2 (loaded) <br/>";
	}
	else if (xmlHttp.readyState == 3)
	{
	myDiv.innerHTML += "Request status: 3 (interactive) <br/>";
	}
	// when readyState is 4, we also read the server response
	*/
	else if (xmlHttp.readyState == 4)
	{
		// continue only if HTTP status is "OK"
		document.getElementById("div_loading").style.display="none";
		if (xmlHttp.status == 200)
		{
	
    		
    
			try
			{
			// read the message from the server
			response = xmlHttp.responseText;
			popup.document.body.innerHTML = response;
			popup.document.body.style.backgroundColor = '#DAE8F5';
			popup.show(300, 300, 350, 300, document.body)
			// display the message
			//myDiv.innerHTML += "Request status: 4 (complete). Server said: <br/>";
			//myDiv.innerHTML = response;
			}
			catch(e)
			{
			// display error message
				alert("Error reading the response: " + e.toString());
			}
		}
		else
		{
			// display status message
		alert("There was a problem retrieving the data:\n" +
		xmlHttp.statusText);
		}
	}
}