function createRequestObject() {
	var ro;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		ro = new XMLHttpRequest();
	}
	return ro;
}

var http = createRequestObject();
var http2 = createRequestObject();

function sendDrink(to) {
	http.open("get", "mail.php?cmd=sendDrink&toId="+to);
	http.onreadystatechange = drinkSent;
	http.send(null);
}
function drinkSent() {
	if(http.readyState == 4) { // successful postback
		alert("Your drink sent successfully.");
	}
}