submit button in ie7

I have a search form that in IE7 shows up with no results if pressing enter, yet works fine when clicking mouse button. The url that shows up when clicking mouse is
/reverse_results.php?S_num=&S_phone=555-555-1212&Search.x=36&Search.y=7
but when pressing submit it shows up as
/reverse_results.php?S_num=&S_phone=555-555-1212
Please advise, thanks.

Do you have a url where we can see this behavior?

reverse_search.php
In Internet Explorer, 6, 7 or 8
first type in 732-905-0898 and press enter. You will not get results. Then do it again and click with mouse, and the results come up.
Thanks.

This is an issue with IE and having only one form element. If you add an additional form element and make it hidden, the value should be posted and you should get results.

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>

I looked up the error and it appears that the second input has to be a text input but displayed as none:
form-submit-by-enter-key-and-internet-explorer/

Thank you! Worked perfectly.

Great to hear it. If you run into any additional issues, feel free to open a new thread.