function backhome(target){
	if(target=="teacher"){
		document.location.href="../teacher/teacherlogin.asp";
	}else if(target=="member"){
		document.location.href="../member/memberlogin.asp";
	}
}
function logout(target){
	document.location.href="../member/logout.asp?target=" + target;
}
function logout_teacher(target){
	document.location.href="../teacher/logout.asp?target=" + target
}