Example needs tons of work though

test.html

<script type="text/javascript">
jQuery(document).ready(function(){
    Drupal.settings.lang = {};
    Drupal.settings.lang.test1 = "test1";
    Drupal.settings.lang.test2 = "test2";

    console.log(janrain.settings.language);

    if(janrain.settings.language == 'en-US') {
        console.log("Language matches");
        //Make this an array so it is auto hide
        jQuery('.ru-RU').hide();
    };
    if(janrain.settings.language == 'ru-RU') {
        console.log("Language matches");
        //Make this an array so it is auto hide
        jQuery('.en-US').hide();
    };

    jQuery('#choose-lang').live('change', function(){
        var lang = $(':selected', this).val();
        jQuery('.en-US').toggle();
        jQuery('.ru-RU').toggle();
    });

});
</script>
<div style="display:none;" id="signIn">
    <div class="capture_header">
    </div>
    <div class="choose">
        <label for="choose-lang">Choose Language</label>
        <select name="select-lang" id="choose-lang">
            <option value="en-US">US</option>
            <option value="ru-RU">Russian</option>
        </select>
    </div>