var xmlDoc = null;

function actionScreen(page) {
    if (typeof window.ActiveXObject != 'undefined') {
        xmlDoc = new ActiveXObject('Msxml2.XMLHTTP');
    } else {
        xmlDoc = new XMLHttpRequest();
    }
    if (xmlDoc && document.getElementById) {
        htmlLoc = page;
        if (actionScreen.arguments[1] && actionScreen.arguments[2]) {
            htmlLoc += '?add=add&imageId=' + actionScreen.arguments[1] + '&memberId=' + actionScreen.arguments[2];
        }
		if (actionScreen.arguments[3]) {
            htmlLoc += '&slideId=' + actionScreen.arguments[3];
        }
        xmlDoc.onreadystatechange = showBox;
        xmlDoc.open('GET',htmlLoc,true);
        xmlDoc.send(null);
        return false;
    } else {
        return true;
    }
}

function showBox() {
    if (xmlDoc.readyState != 4 || xmlDoc.status != 200) return;
    with (document.getElementById('register')) {
        style.display = 'block';
        innerHTML = xmlDoc.responseText;
    }
}

function closeLogin() {
    with (document.getElementById('register')) {
        style.display = 'none';
        innerHTML = null;
    }
}

function selectBox(id)
{
	document.getElementById('new').checked = false;
	try 
	{
		document.getElementById('existing').checked = false;
	}
	catch (e)
	{
	}
	
	document.getElementById(id).checked = true;
}

function clearDefault(id, value, defaultValue)
{
	if (document.getElementById(id).value == defaultValue)
	{
		document.getElementById(id).value = "";
	}
}