function adcheck_pbsads (url) {
	var PBS_ad_html;

	if(url.indexOf("/wotp/") == 0)
		PBS_ad_html = PBS_ads[1].adHtml("/wotp/", 0)
	else if(url.indexOf("/wnet/americanmasters/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/wnet/americanmasters/", 0)
	else if(url.indexOf("/wireless/avantgo/signup/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/wireless/avantgo/signup/", 1)
	else if(url.indexOf("/wgbh/nova/adventures/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/wgbh/nova/adventures/", 1)
	else if(url.indexOf("/wgbh/mystery/american/skinwalkers/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/wgbh/mystery/american/skinwalkers/", 0)
	else if(url.indexOf("/science/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/science/", 1)
	else if(url.indexOf("/pov/pov2001/5girls/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/pov/pov2001/5girls/", 0)
	else if(url.indexOf("/pov/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/pov/", 0)
	else if(url.indexOf("/opb/historydetectives/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/opb/historydetectives/", 0)
	else if(url.indexOf("/news/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/news/", 1)
	else if(url.indexOf("/marktwain/") == 0)
		PBS_ad_html = PBS_ads[2].adHtml("/marktwain/", 0)
	else if(url.indexOf("/life/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/life/", 1)
	else if(url.indexOf("/lewisandclark/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/lewisandclark/", 0)
	else if(url.indexOf("/juliachild/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/juliachild/", 0)
	else if(url.indexOf("/independentlens/insideindies/") == 0)
		PBS_ad_html = PBS_ads[1].adHtml("/independentlens/insideindies/", 0)
	else if(url.indexOf("/home/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/home/", 1)
	else if(url.indexOf("/history/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/history/", 1)
	else if(url.indexOf("/empires/napoleon/") == 0)
		PBS_ad_html = PBS_ads[2].adHtml("/empires/napoleon/", 0)
	else if(url.indexOf("/empires/egypt/") == 0)
		PBS_ad_html = PBS_ads[1].adHtml("/empires/egypt/", 0)
	else if(url.indexOf("/cringely/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/cringely/", 0)
	else if(url.indexOf("/conquistadors/") == 0)
		PBS_ad_html = PBS_ads[2].adHtml("/conquistadors/", 0)
	else if(url.indexOf("/arts/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/arts/", 1)
	else if(url.indexOf("/americanrootsmusic/") == 0)
		PBS_ad_html = PBS_ads[1].adHtml("/americanrootsmusic/", 0)
	else if(url.indexOf("/americanfieldguide/") == 0)
		PBS_ad_html = PBS_ads[1].adHtml("/americanfieldguide/", 0)
	else if(url.indexOf("/americanfamily/") == 0)
		PBS_ad_html = PBS_ads[3].adHtml("/americanfamily/", 0)
	else if(url.indexOf("/aboutsite/") == 0)
		PBS_ad_html = PBS_ads[0].adHtml("/aboutsite/", 1)
	else if(url.indexOf("/aboutpbs/") == 0)
		PBS_ad_html = PBS_ads[1].adHtml("/aboutpbs/", 1)


	if(PBS_ad_html) document.write(PBS_ad_html);
}

adcheck_pbsads(document.location.pathname);