The YUILoader Utility is designed, of course, to help you put YUI components on the page. But your applications will frequently consist of a YUI-component foundation with your own application logic built on top. In other words, when you're loading YUI components you'll often want to load your own components as well.
yahoomaps module and, when we request it, the required files are brought into the page in the correct order.
Note 1: As of YUI 2.4.1, defining custom modules that override existing YUI skins requires a specific syntax. See the example code below for details. Note 2: Opera is not fully supported by the Yahoo! Maps AJAX API.