var lastFocusedControlId = "";function focusHandler(e) {    document.activeElement = e.originalTarget;}function appInit() {    if (typeof(window.addEventListener) !== "undefined") {        window.addEventListener("focus", focusHandler, true);    }    Sys.WebForms.PageRequestManager.getInstance().add_pageLoading(pageLoadingHandler);    Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(pageLoadedHandler);}function pageLoadingHandler(sender, args) {    lastFocusedControlId = typeof(document.activeElement) === "undefined"         ? "" : document.activeElement.id;}function focusControl(targetControl) {    if (Sys.Browser.agent === Sys.Browser.InternetExplorer) {        var focusTarget = targetControl;        if (focusTarget && (typeof(focusTarget.contentEditable) !== "undefined")) {            oldContentEditableSetting = focusTarget.contentEditable;            focusTarget.contentEditable = false;        }        else {            focusTarget = null;        }        targetControl.focus();        if (focusTarget) {            focusTarget.contentEditable = oldContentEditableSetting;        }    }    else {        targetControl.focus();    }}function pageLoadedHandler(sender, args) {    if (typeof(lastFocusedControlId) !== "undefined" && lastFocusedControlId != "") {        var newFocused = $get(lastFocusedControlId);        if (newFocused) {            focusControl(newFocused);        }    }}Sys.Application.add_init(appInit);