SharePoint Progress Alert Code

<script type="text/ecmascript" language="ecmascript">

var statusId = '';
var notifyId = '';

function AddNotification()
{
    notifyId = SP.UI.Notify.addNotification("Hello World!", true);
}

function RemoveNotification()
{
    SP.UI.Notify.removeNotification(notifyId);
    notifyId  = '';
}

function AddStatus()
{
    statusId = SP.UI.Status.addStatus("Status good!");
    SP.UI.Status.setStatusPriColor(statusId, 'Blue');
}

function RemoveLastStatus()
{
    SP.UI.Status.removeStatus(statusId);
    statusId = '';
}

function RemoveAllStatus()
{
    SP.UI.Status.removeAllStatus(true);
}

</script>

<input id="Button1" type="button" value="Add Notification" onclick="AddNotification()" />
   <input id="Button2" type="button" value="Remove Notification" onclick="RemoveNotification()" />
   <p></p>
   <input id="Button3" type="button" value="Add Status" onclick="AddStatus()" />
   <input id="Button4" type="button" value="Remove Last Status" onclick="RemoveLastStatus()" />
   <input id="Button5" type="button" value="Remove All Status" onclick="RemoveAllStatus()" />