Hello World Window
Ext.onReady(function(){
Ext.Msg.progress('Hey!', 'waiting...', 'progressing');
var count = 0;
var interval = window.setInterval(function() {
count = count + 0.04;
Ext.Msg.updateProgress(count);
if(count >= 1) {
window.clearInterval(interval);
Ext.Msg.hide();
}
}, 100);
});