Explications de script

Qlq un peux m exepliquer se script,Merci
Peux t ont visualiser le contenu de retour.php
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<form name="form1" onSubmit="return Validation();"
action="http://www.adresse de site/retour.php" method="POST">
<table border=0 align="left" cellpadding=5>
<tr bgcolor="#FCCC66">
<td height="37" colspan="2" class="text"> <div align="center"></div></td>
</tr>
<tbody>
<tr>
<td width="96" bgcolor=#D96006 class="text"> <div align=right class="text">Nom
*</div></td>
<td width="366" bordercolor="#ECE9D8" bgcolor=#D96006 class="text">
<input name="nom" class="buttons" size=30> </td>
</tr>
<tr>
<td bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">Prénom * </font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name=prenom class="buttons" size=30>
</td>
</tr>
<tr>
<td bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">Adresse * </font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name=address class="buttons" size=50>
</td>
</tr>
<tr>
<td bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">Code Postal</font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name="zip" class="buttons" size=24>
</td>
</tr>
<tr>
<td bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">Ville *</font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name="ville" class="buttons" size=24>
</td>
</tr>
<tr>
<td bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">Pays * </font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name="pays" class="buttons" size=24>
  </td>
</tr>
<tr>
<td valign=top bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">Téléphone</font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name=teldomicile class="buttons" size=24>
</td>
</tr>
<tr>
<td bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">Fax</font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name=fax class="buttons" size=24>
</td>
</tr>
<tr>
<td bgcolor=#D96006 class="text"> <div align=right><font
face="Geneva, Arial, Helvetica, san-serif">E-Mail * </font></div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <input name=email1 class="buttons" size=24>
</td>
</tr>
<tr>
<td height="59" valign=top bgcolor=#D96006 class="text"> <div align=right>
<p align="center"><br>
<b>Vos message</b></p>
</div></td>
<td bordercolor="#ECE9D8" bgcolor=#D96006 class="text"> <textarea name=message cols=40 rows=4>Saisissez votre texte ici...</textarea>
</td>
</tr>
<tr valign="middle">
<td height="57" colspan="2" bgcolor=#D96006 class="text"> <div align="center"><span class="text">
<script language="JavaScript" src="" type="text/JavaScript" OLDREF="http://www.adresse de site-controle.js"></script>
</span>
<input name="submit" type="submit" value="ENVOYER">
<span class="text">  
<input name="reset" type="reset" value="ANNULER">
</span></div></td>
</tr>
<tr valign="middle" bgcolor="#FCCC66">
<td height="32" colspan="2" class="text"> </td>
</tr>
</tbody>
</table>
<div align="center"></div>
</form>
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Merci pour l aide