function rsintro ()
{
	var currentCookies = document.cookie;
	if (currentCookies.indexOf ('rsintro') == -1 && parent.location.href == window.location.href)
	{
		var expireDate = new Date (2050, 0, 10);
		var cookieString = "rsintro=1; expires=" + expireDate.toGMTString() + "; path=/";
		document.cookie = cookieString;
		document.write('<embed src="/mp3/rsintro.mp3" autostart="true" hidden="true" loop="false" />');		
	}	 
}