function AdClick(adid) {
    HVParent.AdService.ClickAd(adid, OnAdClickSuccess, OnAdClickError);
}

function OnAdClickSuccess(result, userContext, methodName) {
    //alert('success ' + result);
}

function OnAdClickError(error, userContext, methodName) {
    //alert('error ' + error.get_message());
}

function ItemClick(itemid) {
    HVParent.AdService.ClickItem(itemid, OnAdClickSuccess, OnAdClickError);
}