Anyway, short story is that the solution is simple - WindowlessMode - and is introduced in this post on Using Opacity with a ... Mashup.
new agHostfor "WPF/E", which looks slightly different now we have "Silverlight", so find your createSilverlight() function and add the bolded line (don't forget the comma):
function createSilverlight()[UPDATE] isWindowless works just fine on:
var scene = new Blend1.Scene();
onLoad: Sys.Silverlight.createDelegate(scene, scene.handleLoad)
- MacOS/Firefox - Css menus look/work great versus the standard ASP.NET control
... but there seems to be a little problem with MacOS/Safari -- the menus pop-down behind the Silverlight control (making them slightly useless) BUT if you know their content, the mouseclick actually seems to go through the Silverlight control and trigger the relevant menuitem/link! Weird.
BTW, Silverlight doesn't even install on Safari 3.0 for Windows (yet)