var FilterForm = {
    
    configure: function(form)
    {
        form = $(form);
        
        if(!form) return;
        
        
        form.select('input.submit.hide').invoke('hide');
        
        form.select('input[type="checkbox"],input[type="radio"]').invoke('observe', 'click', this._showSubmitButtonFunc);
        
        
    },
    
    _showSubmitButtonFunc: function(e)
    {
        var cb = this;
        
        cb.up('.filter').down('input.submit.hide').show();
    }
    
};