var currentVersion;
function checkForUpdate() {
    currentVersion = getKeyValue("info.plist", "CFBundleVersion");
    reqUpdate = new XMLHttpRequest();
    reqUpdate.onreadystatechange = compareVersion;
    reqUpdate.open("GET", "http://www.essendonfc.com.au/news/widget/macLiveScoreVersion.txt", true);
    reqUpdate.setRequestHeader("Cache-Control", "no-cache"); 
    reqUpdate.send(null);
}
function compareVersion() {
	if (reqUpdate.readyState == 4) {
		if (reqUpdate.status == 200) {
			var serverVersion = reqUpdate.responseText;
			if ((currentVersion != serverVersion) && (serverVersion != null) && (serverVersion != "")) {
				document.getElementById('version').style.display='block';
			} else {
				document.getElementById('version').style.display='none';
			}
		}
	}
}
function getKeyValue(plist, key) {
   var xml_http = new XMLHttpRequest();
   xml_http.open("GET", plist, false);
   xml_http.send(null);
   var offset = xml_http.responseText.indexOf('<key>'+key+'</key>',0)+11+key.length;
   offset = xml_http.responseText.indexOf('>',offset)+1;
   var offset2 = xml_http.responseText.indexOf('<',offset);
   return xml_http.responseText.substring(offset,offset2);
}