//Code for display async exception
var divElem = 'AlertDiv';
var messageElem = 'AlertMessage';
var bodyTag = 'bodytag';
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function ToggleAlertDiv(visString) {

    if (visString == 'hidden') {
        $get(bodyTag).style.backgroundColor = 'white';
    }
    else {
        $get(bodyTag).style.backgroundColor = 'gray';

    }
    var adiv = $get(divElem);
    adiv.style.visibility = visString;

}
function ClearErrorState() {
    $get(messageElem).innerHTML = '';
    ToggleAlertDiv('hidden');
}
function EndRequestHandler(sender, args) {
    if (args.get_error() != undefined) {
        var errorMessage;
        if (args.get_response().get_statusCode() == '200') {
            errorMessage = args.get_error().message;
        }
        else {
            // Error occurred somewhere other than the server page.
            errorMessage = 'An unspecified error occurred. ';
        }
        args.set_errorHandled(true);
        ToggleAlertDiv('visible');
        $get(messageElem).innerHTML = errorMessage;
    }
}