Product-Advanced.js

<script type="text/javascript">
    jQuery(document).bind('gform_post_render', function(e, formId, currentFormPage) {
      var $form = jQuery('#gform_' + formId);
      $form.find(".gform_body li.preview-area img" ).css('display','none');
      $form.find(".gform_body li.preview-area .demo-product:eq(0)" ).css('display','block');
      $form.find(".gform_body li.preview-area .demo-artwork:eq(1)" ).css('display','block');
      // On color swatch click/secltion
      $form.find("li.color-picker-choice " ).click(function() {
        var $radioIndex = $form.find("li.color-picker-choice ").index(this);
        var $imageRef = $form.find(".gform_body li.preview-area .demo-product");
        $imageRef.css("display","none"); 
        $imageRef.eq( $radioIndex ).css("display","block"); 
      });
      // On image choice click/secltion
      $form.find("li.image-choices-choice" ).click(function() {
        var $choiceIndex = $form.find( "li.image-choices-choice").index(this);
        var $choiceImageRef = $form.find( ".gform_body li.preview-area .demo-artwork");
        $choiceImageRef.css("display","none"); 
        $choiceImageRef.eq( $choiceIndex ).css("display","block"); 
      });
    });
</script>