how to detect keyboard layout js
function checkKeyboard(ob,e){
re = /\d|\w|[\.\$@\*\\\/\+\-\^\!\(\)\[\]\~\%\&\=\?\>\<\{\}\"\'\,\:\;\_]/g;
a = e.key.match(re);
if (a == null){
alert('Error 2:\nNon English keyboard layout is detected!\nSet the keyboard layout to English and try to fill out the field again.');
ob.val('');
return false;
}
return true;
}