if (self.location.protocol == "file:") f = self.location.pathname.split("\\");
else f = self.location.pathname.split("/");

filename = f[f.length-1];

if (!top.frames[0] || top.frames.length != 5 || top.frames[0].name != "linksfrei")
	self.location.replace("index.html?" + filename);
else {
	if (filename.indexOf("_") != -1) nav = filename.substring(0,filename.indexOf("_"));
	else nav = filename.substring(0,filename.indexOf("."));	
	parent.nav.choose(nav);
}