if (navigator.plugins) { 
	for (i=0; i < navigator.plugins.length; i++ ) { 
		if (navigator.plugins[i].name.indexOf ("QuickTime") >= 0) 
			haveqt = true;
	}
}
if ((navigator.appVersion.indexOf("Mac") > 0) && (navigator.appName.substring(0,9) == "Microsoft") && (parseInt(navigator.appVersion) < 5) ) 
	haveqt = true;