Original Image Displaying in View Nivo Slider

Hello Folks,

I am not sure if this setting is there somewhere, but I have had hard time in displaying original images that I had uploaded for my content. I had uploaded images of 1000 X 429 for all my contents and linked them with nivo slider, there I dint find any option to display orignal image.

We have an option for the settings of Format : "View Nivo Slider", there we have Image field style option and available values are thumbnail, medium, large We don't have Original / None value there.

###I have done the following to achieve the desired resule, let me know if any better way is there or this is an issue that is there###

file - views_nivo_slider_style_plugin.inc Line #60

Replaced '#options' => $presets WITH '#options' => array_merge(array('' => t('<None>')), $presets),

then in my template.php of theme file, I have added

function MyTheme_image_style($variables) {
  // Determine the dimensions of the styled image.
  $dimensions = array(
    'width' => $variables['width'], 
    'height' => $variables['height'],
  );

  image_style_transform_dimensions($variables['style_name'], $dimensions);

  $variables['width'] = $dimensions['width'];
  $variables['height'] = $dimensions['height'];

  //by dharam if no style is specified i.e if none, use original
  
  if(!empty($variables['style_name']))//else original will be used
  {  
	  // Determine the url for the styled image.
	  $variables['path'] = image_style_url($variables['style_name'], $variables['path']);
  }
  return theme('image', $variables);
}