anchor.diff:                      <td></td>
                       <td></td>
                       <td></td>
  -                    <td><input type="text" value="-Infinity" size="10"></td>
  -                    <td><input type="text" value="Infinity" size="10"></td>
  +                    <td><input type="text" value="-Infinity" size="10" id="lowNormal_G_index" class="lowNormal" onchange="normalRangeCheck('index', 'low');"></td>
  +                    <td><input type="text" value="Infinity" size="10" id="highNormal_G_index" class="highNormal" onchange="normalRangeCheck('index', 'low');"></td>
                       <td></td>
                       <td></td>
                       <td></td>
  
positive.code: 
          function normalRangeCheck( index, edge ){
              var lowNormalValue, highNormalValue, lowValidValue, highValidValue;
              var lowNormal = $jq( "#lowNormal_" + index);
              var highNormal = $jq( "#highNormal_" + index);
              var lowValid = $jq("#lowValid");
              var highValid = $jq("#highValid");
  
              lowNormal.removeClass("error");
              lowNormalValue = +lowNormal.val();
              if( lowNormalValue != "-Infinity" &&
  
negative.code:                 return;
              }
  
  
              if( lowValidValue == "-Infinity" && highValidValue == "Infinity"){
                  return;
              }
  
  