winIEpass = ((navigator.appName.indexOf("Microsoft") != -1) && 
(navigator.appVersion.indexOf("Windows") != -1)) && 
(parseFloat(navigator.appVersion) >= 4) ? true : false;

NNpass = ((navigator.appName == "Netscape") && 
(navigator.userAgent.indexOf("Mozilla") != -1) && 
(parseFloat(navigator.appVersion) >= 4) && 
(navigator.javaEnabled())) ? true : false;

supportedBrowser = (winIEpass || NNpass) ? true : false;

minPlayer = 4;

// check for Flash Plug-in in Mac or Win Navigator. Get plug-in version.
function Flash_checkForPlugIn() {
	var plugin = (navigator.mimeTypes &&
	navigator.mimeTypes["application/x-shockwave-flash"]) ?
	navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0;
	if (plugin) {
		var pluginversion = parseInt(plugin.description.substring(plugin.description.indexOf(".")-1)) 
		if(pluginversion >= minPlayer) {return true;}
	}
	return false;
}

// vbscript check for Flash ActiveX control in windows IE
if(supportedBrowser && winIEpass) {
	document.write(
		'<script language=VBScript>' + '\n' +
		'Function Flash_checkForActiveX()' + '\n' +
			'Dim hasPlayer, playerversion' + '\n' +
			'hasPlayer = false' + '\n' +
			'playerversion = 10' + '\n' +
			'Do While playerversion >= minPlayer' + '\n' +
				'On Error Resume Next' + '\n' +
				'hasPlayer = (IsObject(CreateObject(\"ShockwaveFlash.ShockwaveFlash.\" & playerversion & \"\")))' + '\n' +
				'If hasPlayer = true Then Exit Do' + '\n' +
				'playerversion = playerversion - 1' + '\n' +
			'Loop' + '\n' +
			'Flash_checkForActiveX = hasPlayer' + '\n' +
		'End Function' + '\n' +
		'<\/script>'
	);
}

function Flash_checkForMinPlayer() {
	if(!supportedBrowser) return false;
	if(NNpass) return (Flash_checkForPlugIn());
	if(winIEpass) return (Flash_checkForActiveX());
}