function chkLogin()
{
	var obj=document.login;
	if(obj.user_login.value=="")
	{
		alert("Please enter your Login Name");
		obj.user_login.focus();
		return false;
	}
	if(obj.password.value=="")
	{
		alert("Please enter your Password");
		obj.password.focus();
		return false;
	}
	obj.action="login_check.php?opt=check";
}