function yahooBeacon (brand, site, ncat) {
	document.write('<iframe id="yahooBeacon"' + 
		'src="http://mads.com.com/mac-ad?celt=ifc&beacon=1&brand=' + brand + '&site=' + site + '&ncat=' + ncat + '"' +
		'width="1" height="1" marginwidth="0" marginheight="0" frameborder="0" scrolling="no" allowtransparency="true"' +
		'background-color="transparent"></iframe>');
}