function sso_chk(f){
		

		document.sso_frm.user_id.value=f.user_id.value;
		document.sso_frm.password.value=f.password.value;
		
		document.sso_frm.method="post";
		document.sso_frm.action="http://www.robotis-shop-kr.com/sso/sso_member_join.php";
		document.sso_frm.target="hiddenframe";
		document.sso_frm.submit();

		return true;

}

function sso_logout(){
		hiddenframe.location.href="http://www.robotis-shop-kr.com/sso/sso_member_join.php?logout=1";
}