please i want to know if there is a possibility to force the user to type english characters
coz i made all my web site in arabic and germany languages

i want to force user to type the username and password in english characters

any ideas?

I don't believe there is any way you can control that. However you can put up a virtual keyboard with English characters that they click on that will fill in the username and password (this is probably a terrible idea, but the only way I can think of that would work for your situation).

You can't control their keyboard, but you can validate the input they give you. A simple regular expression /[^a-zA-Z ]/ will tell you if anything other than roman letters or spaces was entered. I recommend doing this on the server however, not with JavaScript.

Wayfarer07, that won't help for users who don't have the proper language settings to allow them to login. The user either needs to switch there language context or do some other way of getting the roman characters in there.

So he'd still be stuck with not being able to switch the end users language context so that they can login.

(a validation message would still be nice so that the user know why they are getting an error)

JavaScript can't change a user's language settings, since that is a settings on the user's personal computer. JavaScript isn't allowed any access whatsoever to the user's computer, only the limited amount of information allowed to it within the browser window and its associated popup windows or frames (on the same domain).

So whatever solution you devise is going to have to be simply warning your users that they must configure their settings to use Roman letters. It's either that, or allow multinational characters.

Why did you decide that allowing arabic characters would be bad?

I think your being close minded about solutions. I'm sure you can set the "input" field to have a "Pop Up" function on click. The popup then appears right over the field and says "Please, use english name." That would help and it's the only solution available to you as everyone else is correct.

However, I think you can make it so people can't use Arabic characters as long as they differ from english characters.