Need help changing the font to Ariel using HTML

Hi, I need to make all visible txt in the following Ariel. Currently it is viewing as times on the site. Can you please alter the txt below to make it Ariel without using CSS?

<div id="pnlResultsTable" style="visibility:hidden;">
<div id="pnlQuestionnaireResults">
<h4 class="evaluator">
1. Questionnaire Results</h4>
<p id="questionnaireResultsMessage"></p>
</div>

<div id="pnlScreeningResults">
<h4 class="evaluator">
2. Audio Screening Results</h4>
<p id="screeningResultsMessage"></p>
</div>

<div>
<table border="0" cellspacing="0" cellpadding="0" class="results_table">
<tr id="resultsFirstRow">
<th>
Sound Frequency
</th>
</tr>
<tr id="row1000">
<th>
1000 Hz
</th>
</tr>
<tr id="row2000">
<th>
2000 Hz
</th>
</tr>
<tr id="row3000">
<th>
3000 Hz
</th>
</tr>
<tr id="row4000">
<th>
4000 Hz
</th>
</tr>
</table>
<h4>
Next Steps?</h4>
<p>
We recommend a professional hearing evaluation. Here's what you can do:
</p>

  1. Find a hearing professional in your area
  2. Schedule a free hearing consultation
  3. Print and show these result at your appointment

<p>This online test is an initial screening. Only a comprehensive hearing exam performed by a hearing professional can determine if you have a hearing loss.</p>
</div>
</div>

Many thanks