Trying to convert an animation to html 5 (part 1)

Hi all,

First, let me state that I am barely above beginner status.  I used the hunt and peck method to put together some fairly complex flash animations and I'd now like to convert them to html 5.  This is part 1 of my education I guess.

I started the animation by stopping on frame 1 and making the alpha of some objects 0.  Can I still do this in Javascript?  I hunted around the web for help and it looked like the following code would work (FYI all of these things are "objects" in actionscript.)

this.stop();

this.rightStalk.alpha=.0;
this.leftStalk.alpha=.0;
this.hazard.alpha=.0;
this.brake.alpha=.0;
this.leftSense.alpha=.0;
this.rightSense.alpha=.0;

Is this code correct or is there some other command I have to execute to get alpha to work?

Thanks!