var commonPath="http://www.cars.com";
var loc=location.href;
if(loc.indexOf("buyIndex")!=-1||loc.indexOf("/search")!=-1||loc.indexOf("/config_")!=-1||loc.indexOf("/configurator")!=-1||loc.indexOf("/dealersearch")!=-1||loc.indexOf("/auto-dealers")!=-1||loc.indexOf("/for-sale")!=-1) document.natHeader.src=commonPath+"/cobrand/national/headerNationalContentBuy.gif";

if(loc.indexOf("siy.cars.com")!=-1) document.natHeader.src=commonPath+"/cobrand/national/headerNationalContentSell.gif";

if(loc.indexOf("/news")!=-1||loc.indexOf("/advice")!=-1||loc.indexOf("/glossary")!=-1||loc.indexOf("/autoshow")!=-1||loc.indexOf("/intercar")!=-1) document.natHeader.src=commonPath+"/cobrand/national/headerNationalContentNews.gif";

if(loc.indexOf("/crp")!=-1||loc.indexOf("/kbb/")!=-1||(loc.indexOf("/features")!=-1&&(loc.indexOf("/intercar")==-1&&loc.indexOf("/autoshow")==-1))) document.natHeader.src=commonPath+"/cobrand/national/headerNationalContentResearch.gif";