public static function print_ori_perc_field()
        {
            $field_name = 'ori_perc';
            echo '<b>' . self::prepare_pro_label(__('Original Percentage', 'nelioab'), false) . '</b><br><br>';
            printf('<input type="range" id="%1$s" name="nelioab_settings[%1$s]" min="55" max="95" step="5" value="%2$s" %3$s /><br>', $field_name, NelioABSettings::get_original_percentage(), self::get_pro_details());
            ?>
			<span <?php 
            echo self::get_pro_details('description');
            ?>
 id="value_<?php 
            echo $field_name;
            ?>
"></span>
			<script type="text/javascript">
				jQuery("#algorithm").on("change", function() {
					var option = jQuery("#<?php 
            echo $field_name;
            ?>
").parent().parent();
					if ( jQuery(this).attr('value') == '<?php 
            echo NelioABSettings::ALGORITHM_PRIORITIZE_ORIGINAL;
            ?>
' ) option.show();
					else option.hide();
				});
				jQuery("#algorithm").trigger("change");
				jQuery("#<?php 
            echo $field_name;
            ?>
").on("input change", function() {
					var str = "<?php 
            $str = __('<strong>{value}%</strong> of your visitors will see the original version of the experiment.<br>The rest of the users will see the other alternatives.', 'nelioab');
            $str = str_replace('"', '\\"', $str);
            echo $str;
            ?>
";
					var value = jQuery(this).attr('value');
					str = str.replace( '{value}', value );
					jQuery("#value_<?php 
            echo $field_name;
            ?>
").html(str);
				});
				jQuery("#<?php 
            echo $field_name;
            ?>
").trigger("change");
			</script>
			<?php 
        }