# Alpha Setting

**URL:** https://forum.kirupa.com/t/alpha-setting/150387
**Category:** flash
**Created:** [June 7, 2005, 6:05am UTC](https://forum.kirupa.com/t/alpha-setting/150387 "2005-06-07T06:05:31Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Chandan](https://avatars.discourse-cdn.com/v4/letter/c/f04885/32.png) [@Chandan](https://forum.kirupa.com/u/Chandan)
#### Post date: [June 7, 2005, 6:05am UTC](https://forum.kirupa.com/t/alpha-setting/150387/1 "2005-06-07T06:05:31Z")

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Hey all! I need some desperate help in Actionscript. I want to achieve the effect on [http://thanea.com/ars/](http://thanea.com/ars/). The effect on the left on the about page in which when the mouse moves over the alpha of the object goes to 0%. I have all the layers set up with masks and all but need the action script. I tried applying the following code to a mask which i converted to a movieclip.

on(rollover){  
this.\_alpha–;  
}

But this did not work for some reason. It would be greatly appreciated if one or many of you could maybe help me out as I am a n00b with AC. Again any help will be appreciated. Thank you.