var hasFlash = false;

// Check if the browser can play Flash content
try {
	hasFlash = Boolean(new ActiveXObject('ShockwaveFlash.ShockwaveFlash'));
} catch(exception) {
	hasFlash = ('undefined' != typeof navigator.mimeTypes['application/x-shockwave-flash']);
}

// Function to embed Flash content, or if Flash is not present, either load server-side
// Ruffle on modern systems or let the user know to install Flash or Ruffle otherwise.
function embedFlash(swf) {
	if (hasFlash) {
		document.write('a');
	} else {
		document.write('b');
	}
}