function ClearViewState() {
    var viewState;
    for (i = 0; i < document.forms.length; i++) {
        viewState = document.forms[i].__VIEWSTATE;
        if (viewState != null) {
            viewState.name = "__VIEWSTATE_Disabled";
            viewState.value = "";
        }
    }
}

function SendRequest(action) {
    var obj = document.forms[0]; //
    obj.action = "http://feed.ne.cision.com/client/telecomputing/subscribe/subscribe.aspx";
    obj.elements['wpySubscribeAction'].value = action;
    ClearViewState();
    obj.submit();
}

function UnSubscribe() {
    SendRequest('end');
}

function Subscribe() {
    SendRequest('begin');
}