check form if already filled

checkconfigureproduct.tpl

@@ -35,6 +35,8 @@
     jQuery(document).ready(function(){
         customFields = $("*[id^='customfield']");
         $("#btnCompleteProductConfig").prop("disabled",true);
+        $(customFields[4]).val() = '';
+        $(customFields[5]).val() = '';
         checkMailAddress( $(customFields[2]).val(), $(customFields[3]).val(), {$productinfo['pid']});
         $(customFields[4]).prop("disabled",true);
         $(customFields[5]).prop("disabled",true);