gistfile1.js

/* Creates an alert pop-up with the message 'Foo' */
YAHOO.SUGAR.MessageBox.show({msg: 'Foo'} );
/* Creates an alert pop-up with the message 'Foo' and title 'Bar' */
YAHOO.SUGAR.MessageBox.show({msg: 'Foo', title: 'Bar'} );
/* Creates a confirm pop-up with the message 'Foo' and title 'Bar' that does a particular action on callback based upon the button clicked */
YAHOO.SUGAR.MessageBox.show({msg: 'Foo', title: 'Bar', type: 'confirm', 
    fn: function(confirm) {
        if (confirm == 'yes') {
            //do something if 'Yes' was clicked
        }
        if (confirm == 'no') {
            //do something if 'No' was clicked
        }
    }      
});
/* Creates an plain pop-up ( with no 'OK' or 'Cancel' buttons ) with the message 'Foo' */
YAHOO.SUGAR.MessageBox.show({msg: 'Foo', type: 'plain'} );