function createXMLHttpRequest() {
	if (window.ActiveXObject) {
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else {
		xmlHttp = new XMLHttpRequest();
	}
	return xmlHttp
}

function validateEmail(email) {
	return true
}
function validateadress(adress1, adress2) {
	return true
}
function order() {
	var email = document.getElementById("email").value
	var adress1 = document.getElementById("adress1").value
	var adress2 = document.getElementById("adress2").value
	var numEx = document.getElementById("numEx").value
	if (validateEmail(email) && validateadress(adress1, adress2)) {
		var queryString = "./order.php?"
		queryString += "timeStamp=" + new Date().getTime()
		queryString += "&email=" + email
		queryString += "&adress1=" + adress1
		queryString += "&adress2=" + adress2
		queryString += "&numEx=" + numEx
		xmlHttp=createXMLHttpRequest()
		xmlHttp.open("POST", queryString, false)
		xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")
		xmlHttp.send(queryString)
		// check result
		if (xmlHttp.status != 200) {
			alert("order.php error status: "+xmlHttp.status+"\nerror:"+xmlHttp.statusText) 
		} 
		alert (xmlHttp.responseText)
	} else {
		alert("invalid email format")
	}
}