anchor.diff:                  if (freestyleForm.displayOptions.value == "Y")
                       toggleOptions();
               }
  +            function checkEnter()
  +            {
  +                if (window.event.keyCode == 13)
  +                    doSearch();
  +            }
           </script>
       </head>
   
  -<body onload="loaded();">
  +<body onload="loaded();" onkeyup="checkEnter();">
                 <table width="100%" border="0" cellspacing="0" cellpadding="0" bgcolor="#A90101">
                 <tr bgcolor="#A90101">
                 <td valign="center" align="left"><a href="http://www.cancer.gov" target="_blank" alt="NCI Logo">
  
positive.code:         </tr></table>
          <hr></div>
          <p style="text-align: center"><html:text property="phrase" styleClass="std" style="width: 5in" />&nbsp;&nbsp;
          <html:submit property="search" styleClass="but2">Search</html:submit><br/><span id="workingmsg" style="color: #0000ff; font-weight: bold">&nbsp;</span></p><hr/>
          <html:errors />
  <%
      Vector results = (Vector) pageContext.getRequest().getAttribute(FreestyleSearch._results);
  
negative.code:         <script type="text/javascript">
              function doSearch()
              {
                  if (freestyleForm.limit.value == null || freestyleForm.limit.value.length == 0 || isNaN(freestyleForm.limit.value))
                  {
                      alert("The maximum number of possible results is not valid, please correct.");
                      freestyleForm.limit.focus();
                      return;
                  }
                  if (freestyleForm.score.value == null || freestyleForm.score.value.length == 0 || isNaN(freestyleForm.score.value))
                  {
                      alert("The number of top score groups is not valid, please correct.");
                      freestyleForm.score.focus();
                      return;
                  }
                  workingmsg.innerHTML = "Searching, please wait...";
                  freestyleForm.search.disabled = true;
                  freestyleForm.submit();
              }
              function toggleOptions()
              {
  