Thanks for your reply. I allready have one, see below
<form action="reverse_results.php" method="get" name="WADASearchForm" id="WADASearchForm">
<table border="0" align="center" cellpadding="0" cellspacing="0" class="WADADataTable"><tr>
<th class="WADADataTableHeader"><div align="center"><span class="WADADataTableCell">
<input type="hidden" name="S_num" id="S_num" value="" />
</span>Use - between numbers</div></th>
</tr>
<tr>
<th class="WADADataTableHeader"><div align="center">Phone:</div>
<span id="sprytextfield1">
<label>
<div align="center">
<input name="S_phone" type="text" id="S_phone" title="example 718-555-1212" value="example 718-555-1212" size="25" />
</div>
</label>
<span class="textfieldRequiredMsg">A value is required.</span><span class="textfieldMinCharsMsg">Enter in this format<br />
718-555-1212</span><span class="textfieldMaxCharsMsg">Enter in this format<br />
718-555-1212</span></span></th>
</tr>
</table>
<div class="WADAButtonRow">
<div align="center"><span class="WADADataNavButtonCell">
<input type="image" name="Search" id="Search" value="Search" alt="Search" src="WA_DataAssist/images/Pacifica/Ultramodern_search.gif" />
</span></div>
</div>
</form>