* Modify vars.

module/custom/js/estimate.js

@@ -3,8 +3,8 @@ $(document).ready(function()
     $('#estimateTab').addClass('btn-active-text');
     $('input[name="hourPoint"]').change(function()
     {
-
         $('#saveTips').text('');
+
         /* Set the title and prompt information. */
         if($(this).val() != unit)
         {
@@ -66,7 +66,7 @@ function setScaleFactor()
     }
     else if(isNaN(scaleFactor))
     {
-        alert(notNumber);
+        alert(isNumber);
     }
     else
     {

module/custom/view/estimate.html.php

@@ -6,7 +6,7 @@
 <?php js::set('convertRelationTitle', $lang->custom->convertRelationTitle);?>
 <?php js::set('convertRelationTips', $lang->custom->convertRelationTips);?>
 <?php js::set('notempty', sprintf($this->lang->error->notempty, $this->lang->custom->convertFactor));?>
-<?php js::set('notNumber', sprintf($this->lang->error->float, $this->lang->custom->convertFactor));?>
+<?php js::set('isNumber', sprintf($this->lang->error->float, $this->lang->custom->convertFactor));?>
 <?php js::set('saveTips', $lang->custom->saveTips);?>
 <?php js::set('unit', $unit);?>
 <?php