Because user live in different country use different language coding system.
If the HTML page was written with ISO-8859-1 , then user has to select ISO-8859-1 in order to view it correctly.
And our server has to know your coding when you submit your data.
If different user use different language coding, it will be difficult to handle it.

UTF-8 can prevent this kind of difficulty. Please change your coding to UTF-8 before your do the translation. The default seeting for the browser was automatically switch to the language coding according to server information. Our server already sent out information tell browser to switch to UTF-8 when doing the translation. May be your browser has been set to fixed language coding. Please change it to automatic mode or change it to UTF-8 when you want to do the translation.