closed…
Why not just make a preloader in the SWF?
[LEFT]
[COLOR=#0000ff]getURL[/COLOR]COLOR=#000000[/COLOR];
[/LEFT]
Instead of that ^, try this:
//You have to import the external interface class first
import flash.external.*;
//Call the function with your parameter
ExternalInterface.call("toggleView", "preloader");
BTW, it will only work on a server, not in testing mode on your desktop.