var errfound = false;

function error(elem, text) {
    if (errfound) return;
    window.alert(text);
    elem.select();
    elem.focus();
    errfound = true;
}


function loginCheck(f) {


errfound = false;
    if (f.username.value == "")
        error(f.username,"Loginni kiriting!");
    

    if (f.password.value == "")
       error(f.password,"Parolingizni kiriting!");

    /*if (f.userid.value && f.password.value)
        {

        f.pswd.userid = MD5(MD5(f.password.value) + tm);
        f.password.value = '';
        f.num.value = tm;
        }*/
     return ! errfound;
}