Add IMAGE behind swf script

How can I add an image behind my swf script for my FFR page? It is because the backround image is the BG for the swf that has transparency so it shows black since it isnt blue in the BG

How can i add the blue backround and remove the black you can see? Hope you understand what i mean

Great help and customer care btw!

since you are using this script http://www.a123.com/displayFlash.js to display the game, you should ask that script's authors, not me... or at least read their manual (if exists)