Display a message when GWT app is loading

Quick search through the internet revealed a way to achieve the subject:
developerlife and google groups

If you're to lazy to read those, here is an extremely short tutorial:

1. Place this div on your html (tip: you can generate your own loading gif here):

<div id="initialLoading">
    <img src="images/ajax-loader.gif" alt="loading ..." />
</div>

2. In your app's entry point add this line to remove the div when the app is actually loaded:

DOM.removeChild(RootPanel.getBodyElement(), DOM.getElementById("initialLoading"));

that's all