function checkmain() {
	var f = location.href.substring(location.href.lastIndexOf("/")+1);
	if ((top != self.parent) || (top == self)) {
		top.location.replace('default.asp?main=' + f);
	}
}
function checkmainurl(url) {
	if ((top != self.parent) || (top == self)) {
		top.location.replace(url);
	}
}