How do you find the php template tag from a shortcode only plugin?

Hello,

I have a plugin, Advanced Recent Posts Widget, and I am trying to add it to a Jquery UI Accordion that I have placed in a text/php widget (using HTML) in my sidebar…

I need to try and find out the php tag for the ARP widget so I can add it to one of my Accordion tabs, which is in my sidebar text/php widget…

Here is the code within the text/php widget:

<div class="wp-accordion">

    <!-- First tab's panel -->
    <h3 class="widget-title">Events.</h3>
    <!-- First tab's contents -->
    <div class="wp-tab-content">
          All the contents of first tab goes here....
    </div><!-- end first tab -->

<h3 class="widget-title">Media.</h3>
    <!-- Second tab's contents -->
    <div class="wp-tab-content">
          All the contents of first tab goes here....
    </div><!-- end Second tab -->

      <!-- Third panel -->
      <h3 class="widget-title">Weather.</h3>
      <div class="wp-tab-content">
            <script type="text/javascript"> moColourScheme="default"; moDomain="www.metoffice.gov.uk"; moMountainArea="westhighland"; moMapsRequired="Precip Rate LR,Pressure MSL,Temperature LR"; moTemperatureUnits="C";</script><script type="text/javascript" src="https://www.metoffice.gov.uk/public/pws/components/mountain/loader.js"> </script><p>This <a href='https://www.metoffice.gov.uk/public/pws/components/guide.html' target='blank'>Weather Widget</a> is provided by the <a href='https://www.metoffice.gov.uk' target='blank'>Met Office</a></p>
       </div>

</div><!-- end class wp-accordion -->

Wooft, convoluted!

Any help would be amazing.

Ali.