/*****************************************
 * Randomizer-Script for Images
 *
 * Author..: Julian Stock
 * Home....: www.julian-stock.de
 * Email...: julian[at]julian-stock.de
 * Version.: 1.0
 *****************************************/

/* some definitions & variables */
var refreshTime  = 15000; // in ms
var ajaxRequest  = false;

/* loads messages from chatlog */
function readIMG(folderURL) {
	ajaxRequest = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		ajaxRequest = new XMLHttpRequest();
		if (ajaxRequest.overrideMimeType) {
			ajaxRequest.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}

	if (!ajaxRequest) {
		alert("Finished :( Can't create a XMLHTTP-instance");
		return false;
	}

	ajaxRequest.onreadystatechange = function changeContentChatframe() {
		if (ajaxRequest.readyState == 4) {
			if (ajaxRequest.status == 200) {
				document.getElementById('randomizer').innerHTML = ajaxRequest.responseText;
			} else {
				alert('An error occurred during request.');
			}
		}
	}

	ajaxRequest.open('POST', 'randomizer.php', true);
	ajaxRequest.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	ajaxRequest.send('sf=' + folderURL);
}


function refresh(folderURL) {
	readIMG(folderURL);
	setTimeout("refresh('" + folderURL + "')", refreshTime);
}