var xmlhttp

function saveContactInfo() {

	var first = document.getElementById("first").value;
	var last = document.getElementById("last").value;
	var email = document.getElementById("email").value;
	
	if (first.length == 0 || last.length == 0 || email.length == 0) {
		alert ("All form fields are required!");
		return;
	}

	xmlhttp=GetXmlHttpObject();
	
	if (xmlhttp==null) {
		alert ("Your browser does not support XMLHTTP!");
		return;
	}
	
	var url="/contact.php";
	url=url+"?first="+first;
	url=url+"&last="+last;
	url=url+"&email="+email;
	url=url+"&sid="+Math.random();
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateChanged() {
	if (xmlhttp.readyState==4) {
  		var data = xmlhttp.responseText;
  		document.getElementById("status").innerHTML = "Thanks. Your info was saved!";
	}
}

function GetXmlHttpObject() {
	if (window.XMLHttpRequest) {
		// code for IE7+, Firefox, Chrome, Opera, Safari
		return new XMLHttpRequest();
	}
	if (window.ActiveXObject) {
		// code for IE6, IE5
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
	return null;
}