script for form and also a 'clear the form' button

Hello,

Can someone help me place a 'clear the form' button to the following form?:

Also, I need to write a php script to use the following form:

<form class="style79" action="form.php" method="post">
        <pre class="style19"><span class="style15">

Name:   </span><input size="25" name="first_name">
<span class="style15">
Email:   </span><input size="25" name="last_name">
<span class="style17">
Phone: </span><input size="25" name="state">
<span class="style17">
Shipping Address:

</span><textarea name="city" cols="40" rows="7"></textarea><span class="style17">
 <br>Select Style:
</span><select name="select" size="1"><option>Mens</option><option>Ladies</option></select>
      </pre>
        <div align="center">
         
                      
             
              <div>
<span class="style32">Click </span><a href="javascript: popup_show('MetalsPopUp');" class="style41">here</a>
<span class="style32"> if you would like more <bf><br>
information about our metals<br>
</bf></span></div>

                <div id="MetalsPopUp" class="PopUp">
                    <a href="javascript: popup_hide('MetalsPopUp');">Click Here to Close </a><br>

                    <span class="style40">
Celestrium:  </span><span class="style39">This is a beautiful silver tone metal.  It is the most durable metal available in the recognition industry.  It will not tarnish or fade.</span>
                    <p class="style39"><strong>Gold-Tone Celestrium:</strong> This is a beautiful gold tone metal. The gold tone is achieved by embedding titanium into the molecules of the Celestrium. It is NOT plated so the gold color will not scratch, peel, or wear off. Additionally, it will not tarnish or fade.</p>
                    <p class="style39"><strong>Premium Silver:</strong> This is blend of sterling silver and platinum. It is a brilliant metal that has the look and feel of sterling silver with the strength of platinum.</p>
                    <p class="style39"><strong>10 Karat Gold:</strong> Available in yellow or white gold.</p>
                    <p class="style39"><strong>14 Karat Gold:</strong> Available in yellow or white gold.</p>
                    <p class="style39"><strong>18 Karat Gold:</strong> Available only in yellow gold.</p>
                  <span class="style38">                  </span></div>
         
             
                       
             
                    <div id="SizerPopUp" class="PopUp">
                    <a href="javascript: popup_hide('SizerPopUp');">Click Here to Close </a><br>

             
                       <br><strong> Sizing Your Finger</strong><br><br>

<strong>Option 1:</strong>
We strongly recommend that you visit a local jewelry store or jewelry department in order to have your finger sized accurately by a jewelry professional.  In cases where this is not possible, you may use the option below.  Rings should slide over the knuckle and you should be able to turn the ring on your finger once it is on your finger.  Your finger will tend to swell in warm weather and shrink in cold weather, so please keep this in mind when determining your finger size.  In the event you need your ring re-sized, we reserve the right to charge a $30 re-sizing fee.

<br><br><strong>Option 2:</strong>
1. Print this page and cut out the ring sizer below.
2. Wrap the ring sizer around your finger with numbers facing out and then use transparent tape to fix it in place.
3. Test the ring size by putting the paper ring sizer over the knuckle.
4. When you are satisfied with your  fit, note the ring size number that appears at point of the arrow.
5.  When in doubt between two sizes, go with the larger size to ensure your ring fits.
<br>
(When printed this sizer should measure 73 mm wide.  If it does not, DO NOT use it.)
             
                       
            </div>
   



          <div align="left">
            <pre class="style19"><span class="style2"><strong>Metal Choice:<br></strong></span><select name="select" size="1"><option>Celestrium (Silver Tone):  $189</option><option>Gold Tone Celestrium (Gold Tone) $199</option><option>premium Silver (Silver and Platinum Blend):  $269</option><option>10 Karat White Gold:  $359</option><option>10 Karat Yellow Gold:  $359</option><option>14 Karat White Gold:  $499</option><option>14 Karat Yellow Gold:  $499</option><option>18K Yellow Gold:  $699</option></select>
          </pre>
            <p align="center" class="style25">Click <a href="javascript: popup_show('SizerPopUp');" class="style59">here</a>  to see how to size your finger.<br>
              <span class="style60"><span class="style61"><span class="style58">Click</span> <a href="popup/done1.pdf" onClick="newWindow('done1.pdf',300,300);return false;">here </a><span class="style58">to go to the ring sizer </span></span></span></p>


            <p class="style21"><span class="style19"><span class="style24">Ring size 300-1200<br>
                </span></span><span class="style19"><span class="style24">dropdown box<br>
                <span class="style2"><strong> </strong></span> </span></span><span class="style19">
                <select name="menu1"><option>300</option><option>350</option><option>400</option><option>450</option><option>500</option><option>550</option><option>600</option><option>650</option><option>700</option><option>750</option><option>800</option><option>850</option><option>900</option><option>950</option><option>1000</option><option>1050</option><option>1100</option><option>1150</option><option>1200</option></select>
                </span></p>
          </div>
          <div align="left">
            <pre class="style19"><strong>Above side one<strong> engraving:</strong>  
(max 11 characters) (fill in blank)</strong>
<input name="textfield" size="11" maxlength="11" type="text">
      </pre>
          </div>
       
        <p class="style21"><span class="style19"><strong>Inside Engraving (max 15 characters)<br>
            </strong></span><span class="style19"><strong><span class="style23">(fill in the blank) &nbsp;<br>
            </span></strong></span><span class="style19"><strong>
            <input name="textfield" size="15" maxlength="15" type="text">
</strong></span></p>
        <p class="style21"><span class="style19"><strong>Comments:</strong></span></p>
        <p class="style21"><span class="style19"><strong>
          <textarea name="textarea" cols="40" rows="7"></textarea>
        </strong></span></p>
        <p>
          <input value="Submit" name="Submit" type="submit">
        </p>
      </form>



Bob