+\r
+function showUpdate()\r
+{\r
+ mode = 4;\r
+ hideViews();\r
+ document.getElementById("updateView").style.display = "block";\r
+ document.onclick = null;\r
+ \r
+ window.menu.setLeftSoftkeyLabel(getLocalizedText('update.checknow'), function(){\r
+ checkForUpdate();\r
+ });\r
+ window.menu.setRightSoftkeyLabel(getLocalizedText('softkey.back'), function()\r
+ {\r
+ mode = 1;\r
+ showFullscreen();\r
+ });\r
+ \r
+ document.getElementById("currentVersion").innerHTML = getLocalizedText("update.current") + version;\r
+ checkForUpdate();\r
+}\r
+\r
+function checkForUpdate()\r
+{\r
+ // asynch XHR to server url\r
+ reqV = new XMLHttpRequest();\r
+ reqV.onreadystatechange = checkForUpdateCallback;\r
+ document.getElementById("updateDiv").innerHTML = getLocalizedText("update.checking");\r
+ reqV.open("GET", versionURL, true);\r
+ reqV.setRequestHeader( "If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT" ); // disable caching\r
+ reqV.send(null);\r
+}\r
+\r
+function checkForUpdateCallback()\r
+{ \r
+ if (reqV.readyState == 4) {\r
+ if (reqV.status == 200) {\r
+ // little overhead here, one could use also string for version info\r
+ var resultXml = reqV.responseText;\r
+ if (resultXml) {\r
+ var div = document.getElementById("tmp");\r
+ div.innerHTML = resultXml;\r
+ var newVersion = div.getElementsByTagName('version')[0].innerHTML;\r
+ var newVersionURL = div.getElementsByTagName('url')[0].innerHTML;\r
+ div.innerHTML = "";\r
+ if (version != newVersion) {\r
+ document.getElementById("updateDiv").innerHTML = getLocalizedText("update.download").replace(/%1/, newVersion).replace(/%2/, newVersionURL);\r
+ }\r
+ else {\r
+ document.getElementById("updateDiv").innerHTML = getLocalizedText("update.nonewversion");\r
+ }\r
+ }\r
+ }\r
+ else {\r
+ document.getElementById("updateDiv").innerHTML = getLocalizedText("update.error") + reqV.status + " " + reqV.responseText;\r
+ }\r
+ }\r
+}\r
+\r
+function hideViews()\r
+{\r
+ document.getElementById("homescreenView").style.display = "none";\r
+ document.getElementById("fullscreenView").style.display = "none";\r
+ document.getElementById("aboutView").style.display = "none";\r
+ document.getElementById("settingsView").style.display = "none";\r
+ document.getElementById("updateView").style.display = "none";\r
+}\r