var Error = {
    container: null,
    isVisible: false,

    Show: function(callback){
        if (Error.isVisible == false)
            Error.container.fadeIn(Data.animation.duration, function(){
                Error.isVisible = true;
                if (callback) callback();
            });
        else Error.Hide(Error.Show);
    },

    Hide: function(callback){
        if (Error.isVisible)
            Error.container.fadeOut(Data.animation.duration, function(){
                Error.isVisible = true;
                if (callback) callback();
            });
        else Error.Show(Error.Hide);
    }
};