Flash detection

slightly more complicated, but actually works in IE (8)

var hasFlash = false;
if (navigator.plugins && navigator.plugins.length) {
  if (navigator.plugins['Shockwave Flash']) {
    hasFlash = true;
  }
} else if (navigator.mimeTypes && navigator.mimeTypes.length) {
  var mimeType = navigator.mimeTypes['application/x-shockwave-flash'];
  hasFlash = mimeType && mimeType.enabledPlugin;
} else {
  try {
    var ax = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
    hasFlash = true;
  } catch (e) {
    // No flash
  }
}