title: Flex 4: How to get actual width of a group when using 100% and top/bottom/left/right?
body: <p>I have an application with width/height of 100%.  I have several nested groups within and their measurements are all not set, instead being defined as top=5 or left/right=10, etc.</p>
  
  <p>I'm trying to get the actual with of a group that should be 390.  I've set the swf object size to be 400 from the html embed code, and the group is inside another group that is width=100%.  The group has a left=5 and right=5 so the width should be 400-10.  When I display the .width and .measuredWidth of this group, the width is always 400.</p>
  
  <p>I'm fairly new to flex/flash.  Do I need to have explicitly set widths in order to get the width of child containers?  Is there something I'm doing wrong here?</p>
  
  <p>Thanks!</p>