So you have now placed a swf file into your html page and you want to be able to see through it.
Lucky for you, this is a very easy thing to do!
The following code does the trick:
<object data="flash/home_side_left.swf" type="application/x-shockwave-flash" width="40px" height="550px"><param name="movie" value="flash/home_side_left.swf" /><param name="bgcolor" value="#ffffff" /><param name="wmode" value="transparent" /><param name="allowScriptAccess" value="always" /></object>
Notice that by just adding the wmode and setting it as ‘transparent’ does everything for you!