var progress=0;
var prog_request;
var test_request;
var TheUrl;
var TheDiv;
var response;
var responses;
var theCookie;

function createRequest()
{ //creates the object for mozilla/ie respectively
	var requester;
	try{
	 var requester = new XMLHttpRequest();
	}
	catch (error){
	 try{
	   var requester = new ActiveXObject("Microsoft.XMLHTTP");
	 }
	 catch (error){
	   return false;
	 }
	}
	return requester;
}

function sendRequest(TheDiv)
{
	var TheUrl = 'ajax-order.php?productid=' + document.getElementById('productid').value + '&productid2=' + document.getElementById('productid2').value + '&productid3=' + document.getElementById('productid3').value + '&productid4=' + document.getElementById('productid4').value;
    test_request = createRequest();
    test_request.onreadystatechange = function handleResponse()
		{//when you get a response back do whatever you want with them
		  if(test_request.readyState == 4)
		  {
		    var response = test_request.responseText;
		    if(response != ""){
			   	document.getElementById(TheDiv).innerHTML = response;
		    }
		  }
		};
    test_request.open('GET', TheUrl, true); //process stuff on the backend  
    test_request.send(null);//'arg1=val1&arg2=val2&arg3=val3'
}

function addproduct() {
	if(document.getElementById('productid').value > 0 || document.getElementById('productid2').value > 0 || document.getElementById('productid3').value > 0 || document.getElementById('productid4').value > 0) {
	 sendRequest('shippingdiv');
	}else{
		document.getElementById('shippingdiv').innerHTML = '';
	}
}