check form if already filled

checkconfigureproduct.tpl

@@ -35,11 +35,11 @@
         return success;
     };
     jQuery(document).ready(function(){
+        customFields = $("*[id^='customfield']");
         if (checkMailAddress( $(customFields[2]).val(), $(customFields[3]).val(), {$productinfo['pid']}) && ($(customFields[5]).val() == $(customFields[4]).val())) {
             $("#btnCompleteProductConfig").prop("disabled",false);
         } else {
             $("#btnCompleteProductConfig").prop("disabled",true);
-            customFields = $("*[id^='customfield']");
             $(customFields[4]).prop("disabled",true);
             $(customFields[5]).prop("disabled",true);
             $(customFields[2]).blur(function () {