good tutorial link for beginners in flex2.0

http://www.senocular.com/flash/tutorials/as3withmxmlc/

Techniques on preloading images into cache.

Learn how to use MovieClipLoader class @ http://www.emllabs.com/article.php?articleId=109 Source code available for download.

Want to know all about ECMAScript.

Visit  http://www.ecmascript-lang.org/

Flash 8 introduces a new way to integrate Flash with its host called the External Interface.

Call functions from javascript to flash and vice versa flash to javascript.

More @ http://www.communitymx.com/content/article.cfm?page=1&cid=0922A

Source code available for download

An example of all the javascript interactions with flash video player. Good one

more @ http://www.jeroenwijering.com/extras/javascript.html