var http_request = false;
var last_mod_orig = 0;
function makeRequest(url) {

	http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
			http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				try {
					http_request = new ActiveXObject("Msxml2.XMLHTTP.4.0");
					} catch (e) {
				}
			
			}
		}
	}

	if (!http_request) {
		setError('f');
		return false;
	}
/*	
	if (url == 'timinglastmod.php') {
		url = url + "?dummy=" + Math.random();
		http_request.onreadystatechange = handleContentLastMod;
		http_request.open('GET', url, true);
		http_request.send(null);
	} else {
*/
		url = url + "?dummy=" + Math.random();
		
		http_request.onreadystatechange = handleContent;
		http_request.open('GET', url, true);
		http_request.send(null);
	
//	}

}
/*
function handleContentLastMod() {

	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			var xmldoc = http_request.responseXML;
			var root_node = xmldoc.getElementsByTagName('root').item(0);
			//alert(root_node);
			
			
			var last_mod = root_node.getElementsByTagName('lastmod')[0].firstChild.nodeValue;
			//alert(last_mod);
			
			
			if (last_mod != last_mod_orig) {
				makeRequest("timingsite.php");
				last_mod_orig = last_mod;
			}
			else {
				//nothing
			}//displayContent(root_node);
		} else {
			setError('There was a problem with the request.');
		}
	}

}
*/


function handleContent() {

	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			var xmldoc = http_request.responseXML;
			var root_node = xmldoc.getElementsByTagName('regatta').item(0);
			displayContent(root_node);
		} else {
			setError('.');
		}
	}

}

function setError(error) {
	document.getElementById('error').innerHTML = error;
}