Put project in net with the right dimension

hy everyone,

Im doing a project of a site in flash/as3… now im trying to put it on web to see some results…

But when i go to publish… i dont know what options are the best…
Like… i put percent 100% in width and height… and it works fine in height but in width it shows me more then my stage width :confused:

what should i do…?
i can show u what i mean … http://e-revista.com.pt/avenir1/
this is the url where im doing some tests…

hope u can help me :wink: