<!--
function checklogin(form,lang) {
 if (form.username.value==""){
   if (lang=="id"){
     alert("Username tidak boleh kosong!");
   }
   else{
     alert("Please, enter your username.");
   }
   form.username.focus();
   return false;
 }
 if (form.password.value==""){
   if (lang=="id"){
     alert("Password tidak boleh kosong!");
   }
   else{
     alert("Please, enter your password.");
   }
   form.password.focus();
   return false;
 }
}
-->