NAV_browser = "ie";
NAV_mac = false;
if(document.getElementById) NAV_browser = "nn6";
if(document.all) NAV_browser = "ie";
if(document.layers) NAV_browser = "nn";
if(navigator.userAgent.toLowerCase().indexOf("mac")) NAV_mac = true;
if(navigator.userAgent.toLowerCase().indexOf("ppc")) NAV_mac = true;
if(navigator.userAgent.toLowerCase().indexOf("powerpc")) NAV_mac = true;
document.write("<script language=\"JavaScript1.2\" src=\"/js/NAV_"+NAV_browser+".js\"></script>");