title: flex application transparent backbround
body: <p>i have some problems with embedding swf into html page. Customer asked me to add some round corners to my application. I added. Then the design of the has changed and instead of black background i got ragial gradient(</p>
  
  <p>So, i need to make the corners of the swf transparent, but don't know how.</p>
  
  <p>wmode=transparent and backgroudAlpha param doesn't work. Need some help... :/</p>
  
  <p>It's important that one solution i found works on Flash Builder Beta 2, but didn't work on Adobe flash builder 4.</p>