How to make scrolling for chat app?

Need auto scroll when new message开发者_开发技巧 arrives.

In ActionScript 3, the TextField object has two properties scrollH and scrollV which control horizontal and vertical scroll respectively.

http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/flash/text/TextField.html

In AS2, the TextField has hScroll and scroll which control horizontal and vertical scroll respectively.

Check out http://www.adobe.com/support/flash/action_scripts/actionscript_dictionary/actionscript_dictionary726.html