Cordova iOS Application Localization/Globalization

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iOS

Hi I am developing a custom camera app using Cordova 3.0.

I am overlaying text using UIlabel and UIImageoverlay to overlay an text and image on to the device camera.

UIImageView *myView = [[UIImageView alloc]  initWithImage:[UIImage imageNamed:]];

myView.alpha = 1.0f;
NSString *deviceType = [UIDevice currentDevice].model;
if([deviceType isEqualToString:@"iPhone"])
{
    myView.frame = CGRectMake(0, 0, 320, 450);
}
else
{
    myView.frame = CGRectMake(0, 0, 768, 1004);
}
cameraPicker.myView=myView;
pickerController.myView=myView;

UILabel *myLabel = [[UILabel alloc] initWithFrame:myView.frame ];
        myLabel.text = @"Some text";
       [myLabel setTextAlignment:NSTextAlignmentCenter];
[myLabel setTextColor:[UIColor whiteColor]];
.
.
.
.
.
.

if([deviceType isEqualToString:@"iPhone"])
{
    myView.frame = CGRectMake(0, 0, 320, 450);
    myLabel.center = CGPointMake(myView.frame.size.width/2,myView.frame.size.height/2);
}
else
{
    myView.frame = CGRectMake(0, 0, 768, 1004);
    myLabel.center = CGPointMake(myView.frame.size.width/2,myView.frame.size.height/2);
}

1. how to apply i18n, l10n to the UILabel when the Strings are in server or JavaScript or in xml.
2.when i wrote the App using Cordova it does give me device Lang(default)but how to override it on a button click in html.and display them without changing the Device default language.
3.how to implement the above using cordova.

Thanks in advance
Ravikiran