GUnload [function]

http://www.google.com/apis/maps/docu­mentation/

Version 2 (2006.4) 新規

You can call this function to cause the map API to cleanup internal data structures to release memory. This helps you to work around various browser bugs that cause memory leaks in web applications. You should call this function in the unload event handler of your page. After this function was called, the map objects that you've created in this page will be dysfunctional.

IE のメモリリークを解決します。
　

Function