var input;
var value;
var valid;

function AjaxDo(where, what)
{
	input = where;
	value = what;
	http_request = false;
	valid = null;

	if (window.XMLHttpRequest)
	{
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType)
			{ http_request.overrideMimeType('text/xml') }
	}
	else if (window.ActiveXObject)
	{
		try { http_request = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {
			try { http_request = new ActiveXObject("Microsoft.XMLHTTP"); }
				catch (e) {}
		}
	}
	if (!http_request)
	{
		// alert('AJAX instance error');
		return false;
	}
	http_request.onreadystatechange = showResult;
	http_request.open('GET', value, true);
	http_request.send(null);
	return valid;
}

function showResult() {
	if (http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{
			if (http_request.responseText == 'success') {
				valid = true;
				document.getElementById(input).className += ' positive';
				return true;
			} else {
				valid = false;
				document.getElementById(input).className += ' negative';
				return false;
			}
		} else {
			// alert('Status error: ' + http_request.status); 
		}
	}
}

function validateFriendEmail(where, what)
{
	sql = 'Network.Account'
	// exist = AjaxDo(where, 'action.php?type=exists&where=' + sql + '&what=' + what);
	// email = AjaxDo(where, 'action.php?type=email&value=' + what));
	// alert('exist: ' + exist + '\nemail: ' + email);
	alert(AjaxDo(where, 'http://www.casino770.com/c770/friend_invite/action.php?type=email&value=' + what));
}