diff --git a/fpdfsdk/src/javascript/Document.cpp b/fpdfsdk/src/javascript/Document.cpp
index bcf8af6..4113f60 100644
--- a/fpdfsdk/src/javascript/Document.cpp
+++ b/fpdfsdk/src/javascript/Document.cpp
@@ -861,12 +861,9 @@
         FXJS_PutObjectBoolean(isolate, pObj, wsKey.c_str(),
                               (bool)pValueObj->GetInteger());
     }
-
     vp << pObj;
-    return TRUE;
-  } else {
-    return TRUE;
   }
+  return TRUE;
 }
 
 FX_BOOL Document::creationDate(IJS_Context* cc,
@@ -929,13 +926,20 @@
 
       m_DelayData.RemoveAll();
     } else {
+      CFX_ArrayTemplate<CJS_DelayData*> DelayDataToProcess;
       for (int i = 0, sz = m_DelayData.GetSize(); i < sz; i++) {
         if (CJS_DelayData* pData = m_DelayData.GetAt(i)) {
-          Field::DoDelay(m_pDocument, pData);
-          delete m_DelayData.GetAt(i);
+          DelayDataToProcess.Add(pData);
+          m_DelayData.SetAt(i, NULL);
         }
       }
       m_DelayData.RemoveAll();
+      for (int i = 0, sz = DelayDataToProcess.GetSize(); i < sz; i++) {
+        CJS_DelayData* pData = DelayDataToProcess.GetAt(i);
+        Field::DoDelay(m_pDocument, pData);
+        DelayDataToProcess.SetAt(i, NULL);
+        delete pData;
+      }
     }
   }
   return TRUE;
@@ -1340,40 +1344,6 @@
   return NULL;
 }
 
-void IconTree::DeleteIconElement(CFX_WideString swIconName) {
-  IconElement* pTemp = m_pHead;
-  int iLoopCount = m_iLength;
-  for (int i = 0; i < iLoopCount - 1; i++) {
-    if (pTemp == m_pEnd)
-      break;
-
-    if (m_pHead->IconName == swIconName) {
-      m_pHead = m_pHead->NextIcon;
-      delete pTemp;
-      m_iLength--;
-      pTemp = m_pHead;
-    }
-    if (pTemp->NextIcon->IconName == swIconName) {
-      if (pTemp->NextIcon == m_pEnd) {
-        m_pEnd = pTemp;
-        delete pTemp->NextIcon;
-        m_iLength--;
-        pTemp->NextIcon = NULL;
-      } else {
-        IconElement* pElement = pTemp->NextIcon;
-        pTemp->NextIcon = pTemp->NextIcon->NextIcon;
-        delete pElement;
-        m_iLength--;
-        pElement = NULL;
-      }
-
-      continue;
-    }
-
-    pTemp = pTemp->NextIcon;
-  }
-}
-
 FX_BOOL Document::addIcon(IJS_Context* cc,
                           const CJS_Parameters& params,
                           CJS_Value& vRet,
@@ -1505,15 +1475,7 @@
                              const CJS_Parameters& params,
                              CJS_Value& vRet,
                              CFX_WideString& sError) {
-  CJS_Context* pContext = (CJS_Context*)cc;
-  if (params.size() != 1) {
-    sError = JSGetStringFromID(pContext, IDS_STRING_JSPARAMERROR);
-    return FALSE;
-  }
-
-  if (!m_pIconTree)
-    return FALSE;
-  CFX_WideString swIconName = params[0].ToCFXWideString();
+  // Unsafe, no supported.
   return TRUE;
 }
 
@@ -1639,7 +1601,10 @@
     return FALSE;
 
   int nPageNo = params.GetSize() > 0 ? params[0].ToInt() : 0;
+
   CPDF_Document* pDocument = m_pDocument->GetDocument()->GetPDFDoc();
+  ASSERT(pDocument != NULL);
+
   CJS_Context* pContext = static_cast<CJS_Context*>(cc);
   if (nPageNo < 0 || nPageNo >= pDocument->GetPageCount()) {
     sError = JSGetStringFromID(pContext, IDS_STRING_JSVALUEERROR);
@@ -1788,47 +1753,7 @@
                               const CJS_Parameters& params,
                               CJS_Value& vRet,
                               CFX_WideString& sError) {
-  if (!(m_pDocument->GetPermissions(FPDFPERM_MODIFY) ||
-        m_pDocument->GetPermissions(FPDFPERM_ASSEMBLE)))
-    return FALSE;
-
-  CJS_Runtime* pRuntime = CJS_Runtime::FromContext(cc);
-  v8::Isolate* isolate = pRuntime->GetIsolate();
-
-  int iSize = params.size();
-  int nStart = 0;
-  int nEnd = 0;
-  if (iSize < 1) {
-  } else if (iSize == 1) {
-    if (params[0].GetType() == CJS_Value::VT_object) {
-      v8::Local<v8::Object> pObj = params[0].ToV8Object();
-      v8::Local<v8::Value> pValue =
-          FXJS_GetObjectElement(isolate, pObj, L"nStart");
-      nStart = CJS_Value(pRuntime, pValue, GET_VALUE_TYPE(pValue)).ToInt();
-      pValue = FXJS_GetObjectElement(isolate, pObj, L"nEnd");
-      nEnd = CJS_Value(pRuntime, pValue, GET_VALUE_TYPE(pValue)).ToInt();
-    } else {
-      nStart = params[0].ToInt();
-    }
-  } else {
-    nStart = params[0].ToInt();
-    nEnd = params[1].ToInt();
-  }
-
-  int nTotal = m_pDocument->GetPageCount();
-  if (nStart < 0)
-    nStart = 0;
-  if (nStart >= nTotal)
-    nStart = nTotal - 1;
-
-  if (nEnd < 0)
-    nEnd = 0;
-  if (nEnd >= nTotal)
-    nEnd = nTotal - 1;
-
-  if (nEnd < nStart)
-    nEnd = nStart;
-
+  // Unsafe, no supported.
   return TRUE;
 }
 
@@ -1871,13 +1796,13 @@
 void Document::DoFieldDelay(const CFX_WideString& sFieldName,
                             int nControlIndex) {
   CFX_DWordArray DelArray;
+  CFX_ArrayTemplate<CJS_DelayData*> DelayDataForFieldAndControlIndex;
 
   for (int i = 0, sz = m_DelayData.GetSize(); i < sz; i++) {
     if (CJS_DelayData* pData = m_DelayData.GetAt(i)) {
       if (pData->sFieldName == sFieldName &&
           pData->nControlIndex == nControlIndex) {
-        Field::DoDelay(m_pDocument, pData);
-        delete pData;
+        DelayDataForFieldAndControlIndex.Add(pData);
         m_DelayData.SetAt(i, NULL);
         DelArray.Add(i);
       }
@@ -1887,6 +1812,14 @@
   for (int j = DelArray.GetSize() - 1; j >= 0; j--) {
     m_DelayData.RemoveAt(DelArray[j]);
   }
+
+  for (int i = 0, sz = DelayDataForFieldAndControlIndex.GetSize(); i < sz;
+       i++) {
+    CJS_DelayData* pData = DelayDataForFieldAndControlIndex.GetAt(i);
+    Field::DoDelay(m_pDocument, pData);
+    DelayDataForFieldAndControlIndex.SetAt(i, NULL);
+    delete pData;
+  }
 }
 
 void Document::AddDelayAnnotData(CJS_AnnotObj* pData) {
diff --git a/fpdfsdk/src/javascript/Document.h b/fpdfsdk/src/javascript/Document.h
index 149102d..4e6fdee 100644
--- a/fpdfsdk/src/javascript/Document.h
+++ b/fpdfsdk/src/javascript/Document.h
@@ -52,7 +52,6 @@
 
  public:
   void InsertIconElement(IconElement* pNewIcon);
-  void DeleteIconElement(CFX_WideString swIconName);
   void DeleteIconTree();
   int GetLength();
   IconElement* operator[](int iIndex);
diff --git a/fpdfsdk/src/javascript/JS_Define.h b/fpdfsdk/src/javascript/JS_Define.h
index 252c50f..174e9ae 100644
--- a/fpdfsdk/src/javascript/JS_Define.h
+++ b/fpdfsdk/src/javascript/JS_Define.h
@@ -82,13 +82,13 @@
       static_cast<CJS_Runtime*>(FXJS_GetRuntimeFromIsolate(isolate));
   if (!pRuntime)
     return;
-  IJS_Context* pRuntimeContext = pRuntime->GetCurrentContext();
+  IJS_Context* pContext = pRuntime->GetCurrentContext();
   CJS_Object* pJSObj = (CJS_Object*)FXJS_GetPrivate(isolate, info.Holder());
   C* pObj = reinterpret_cast<C*>(pJSObj->GetEmbedObject());
   CFX_WideString sError;
   CJS_PropValue value(pRuntime);
   value.StartGetting();
-  if (!(pObj->*M)(pRuntimeContext, value, sError)) {
+  if (!(pObj->*M)(pContext, value, sError)) {
     FXJS_Error(isolate, JSFormatErrorString(class_name_string, prop_name_string,
                                             sError));
     return;
@@ -108,13 +108,13 @@
       static_cast<CJS_Runtime*>(FXJS_GetRuntimeFromIsolate(isolate));
   if (!pRuntime)
     return;
-  IJS_Context* pRuntimeContext = pRuntime->GetCurrentContext();
+  IJS_Context* pContext = pRuntime->GetCurrentContext();
   CJS_Object* pJSObj = (CJS_Object*)FXJS_GetPrivate(isolate, info.Holder());
   C* pObj = reinterpret_cast<C*>(pJSObj->GetEmbedObject());
   CFX_WideString sError;
   CJS_PropValue propValue(CJS_Value(pRuntime, value, CJS_Value::VT_unknown));
   propValue.StartSetting();
-  if (!(pObj->*M)(pRuntimeContext, propValue, sError)) {
+  if (!(pObj->*M)(pContext, propValue, sError)) {
     FXJS_Error(isolate, JSFormatErrorString(class_name_string, prop_name_string,
                                             sError));
   }
@@ -147,7 +147,7 @@
       static_cast<CJS_Runtime*>(FXJS_GetRuntimeFromIsolate(isolate));
   if (!pRuntime)
     return;
-  IJS_Context* pRuntimeContext = pRuntime->GetCurrentContext();
+  IJS_Context* pContext = pRuntime->GetCurrentContext();
   CJS_Parameters parameters;
   for (unsigned int i = 0; i < (unsigned int)info.Length(); i++) {
     parameters.push_back(CJS_Value(pRuntime, info[i], CJS_Value::VT_unknown));
@@ -156,7 +156,7 @@
   CJS_Object* pJSObj = (CJS_Object*)FXJS_GetPrivate(isolate, info.Holder());
   C* pObj = reinterpret_cast<C*>(pJSObj->GetEmbedObject());
   CFX_WideString sError;
-  if (!(pObj->*M)(pRuntimeContext, parameters, valueRes, sError)) {
+  if (!(pObj->*M)(pContext, parameters, valueRes, sError)) {
     FXJS_Error(isolate, JSFormatErrorString(class_name_string,
                                             method_name_string, sError));
     return;
@@ -370,7 +370,7 @@
       static_cast<CJS_Runtime*>(FXJS_GetRuntimeFromIsolate(isolate));
   if (!pRuntime)
     return;
-  IJS_Context* pRuntimeContext = pRuntime->GetCurrentContext();
+  IJS_Context* pContext = pRuntime->GetCurrentContext();
   CJS_Object* pJSObj =
       reinterpret_cast<CJS_Object*>(FXJS_GetPrivate(isolate, info.Holder()));
   Alt* pObj = reinterpret_cast<Alt*>(pJSObj->GetEmbedObject());
@@ -380,7 +380,7 @@
   CFX_WideString sError;
   CJS_PropValue value(pRuntime);
   value.StartGetting();
-  if (!pObj->DoProperty(pRuntimeContext, propname.c_str(), value, sError)) {
+  if (!pObj->DoProperty(pContext, propname.c_str(), value, sError)) {
     FXJS_Error(isolate, JSFormatErrorString(class_name, "GetProperty", sError));
     return;
   }
@@ -397,7 +397,7 @@
       static_cast<CJS_Runtime*>(FXJS_GetRuntimeFromIsolate(isolate));
   if (!pRuntime)
     return;
-  IJS_Context* pRuntimeContext = pRuntime->GetCurrentContext();
+  IJS_Context* pContext = pRuntime->GetCurrentContext();
   CJS_Object* pJSObj =
       reinterpret_cast<CJS_Object*>(FXJS_GetPrivate(isolate, info.Holder()));
   Alt* pObj = reinterpret_cast<Alt*>(pJSObj->GetEmbedObject());
@@ -407,7 +407,7 @@
   CFX_WideString sError;
   CJS_PropValue PropValue(CJS_Value(pRuntime, value, CJS_Value::VT_unknown));
   PropValue.StartSetting();
-  if (!pObj->DoProperty(pRuntimeContext, propname.c_str(), PropValue, sError)) {
+  if (!pObj->DoProperty(pContext, propname.c_str(), PropValue, sError)) {
     FXJS_Error(isolate, JSFormatErrorString(class_name, "PutProperty", sError));
   }
 }
@@ -420,7 +420,7 @@
   IJS_Runtime* pRuntime = FXJS_GetRuntimeFromIsolate(isolate);
   if (!pRuntime)
     return;
-  IJS_Context* pRuntimeContext = pRuntime->GetCurrentContext();
+  IJS_Context* pContext = pRuntime->GetCurrentContext();
   CJS_Object* pJSObj =
       reinterpret_cast<CJS_Object*>(FXJS_GetPrivate(isolate, info.Holder()));
   Alt* pObj = reinterpret_cast<Alt*>(pJSObj->GetEmbedObject());
@@ -428,7 +428,7 @@
   CFX_WideString propname =
       CFX_WideString::FromUTF8(*utf8_value, utf8_value.length());
   CFX_WideString sError;
-  if (!pObj->DelProperty(pRuntimeContext, propname.c_str(), sError)) {
+  if (!pObj->DelProperty(pContext, propname.c_str(), sError)) {
     CFX_ByteString cbName;
     cbName.Format("%s.%s", class_name, "DelProperty");
     // Probably a missing call to JSFX_Error().
@@ -445,14 +445,14 @@
       static_cast<CJS_Runtime*>(FXJS_GetRuntimeFromIsolate(info.GetIsolate()));
   if (!pRuntime)
     return;
-  IJS_Context* pRuntimeContext = pRuntime->GetCurrentContext();
+  IJS_Context* pContext = pRuntime->GetCurrentContext();
   CJS_Parameters parameters;
   for (unsigned int i = 0; i < (unsigned int)info.Length(); i++) {
     parameters.push_back(CJS_Value(pRuntime, info[i], CJS_Value::VT_unknown));
   }
   CJS_Value valueRes(pRuntime);
   CFX_WideString sError;
-  if (!(*F)(pRuntimeContext, parameters, valueRes, sError)) {
+  if (!(*F)(pContext, parameters, valueRes, sError)) {
     FXJS_Error(pRuntime->GetIsolate(),
                JSFormatErrorString(func_name_string, nullptr, sError));
     return;
diff --git a/fpdfsdk/src/javascript/JS_GlobalData.cpp b/fpdfsdk/src/javascript/JS_GlobalData.cpp
index e13b50f..cf5b997 100644
--- a/fpdfsdk/src/javascript/JS_GlobalData.cpp
+++ b/fpdfsdk/src/javascript/JS_GlobalData.cpp
@@ -104,7 +104,7 @@
 // static
 CJS_GlobalData* CJS_GlobalData::GetRetainedInstance(CPDFDoc_Environment* pApp) {
   if (!g_Instance) {
-    g_Instance = new CJS_GlobalData(pApp);
+    g_Instance = new CJS_GlobalData();
   }
   ++g_Instance->m_RefCount;
   return g_Instance;
@@ -117,8 +117,7 @@
   }
 }
 
-CJS_GlobalData::CJS_GlobalData(CPDFDoc_Environment* pApp)
-    : m_pApp(pApp), m_RefCount(0) {
+CJS_GlobalData::CJS_GlobalData() : m_RefCount(0) {
   m_sFilePath += SDK_JS_GLOBALDATA_FILENAME;
   LoadGlobalPersistentVariables();
 }
diff --git a/fpdfsdk/src/javascript/JS_GlobalData.h b/fpdfsdk/src/javascript/JS_GlobalData.h
index b174a8d..a358e80 100644
--- a/fpdfsdk/src/javascript/JS_GlobalData.h
+++ b/fpdfsdk/src/javascript/JS_GlobalData.h
@@ -79,7 +79,7 @@
  private:
   static CJS_GlobalData* g_Instance;
 
-  CJS_GlobalData(CPDFDoc_Environment* pApp);
+  CJS_GlobalData();
   ~CJS_GlobalData();
 
   void LoadGlobalPersistentVariables();
@@ -98,11 +98,9 @@
                       CJS_KeyValue* pData,
                       CFX_BinaryBuf& sData);
 
- private:
   size_t m_RefCount;
   CFX_ArrayTemplate<CJS_GlobalData_Element*> m_arrayGlobalData;
   CFX_WideString m_sFilePath;
-  CPDFDoc_Environment* m_pApp;
 };
 
 #endif  // FPDFSDK_SRC_JAVASCRIPT_JS_GLOBALDATA_H_
diff --git a/fpdfsdk/src/javascript/PublicMethods.cpp b/fpdfsdk/src/javascript/PublicMethods.cpp
index 0b3b38f..71726a2 100644
--- a/fpdfsdk/src/javascript/PublicMethods.cpp
+++ b/fpdfsdk/src/javascript/PublicMethods.cpp
@@ -48,9 +48,18 @@
 
 IMPLEMENT_JS_STATIC_GLOBAL_FUN(CJS_PublicMethods)
 
-static const FX_WCHAR* months[] = {L"Jan", L"Feb", L"Mar", L"Apr",
-                                   L"May", L"Jun", L"Jul", L"Aug",
-                                   L"Sep", L"Oct", L"Nov", L"Dec"};
+static const FX_WCHAR* const months[] = {L"Jan",
+                                         L"Feb",
+                                         L"Mar",
+                                         L"Apr",
+                                         L"May",
+                                         L"Jun",
+                                         L"Jul",
+                                         L"Aug",
+                                         L"Sep",
+                                         L"Oct",
+                                         L"Nov",
+                                         L"Dec"};
 
 static const FX_WCHAR* const fullmonths[] = {
     L"January",   L"February", L"March",    L"April",
@@ -935,7 +944,7 @@
   strValue.Replace(",", ".");
   double dValue = atof(strValue);
   if (iDec > 0)
-    dValue += DOUBLE_CORRECT;  //
+    dValue += DOUBLE_CORRECT;
 
   int iDec2;
   int iNegative = 0;
@@ -984,11 +993,7 @@
     else
       cSeperator = '.';
 
-    int iDecPositive, iDecNegative;
-    iDecPositive = iDec2;
-    iDecNegative = iDec2;
-
-    for (iDecPositive = iDec2 - 3; iDecPositive > 0; iDecPositive -= 3) {
+    for (int iDecPositive = iDec2 - 3; iDecPositive > 0; iDecPositive -= 3) {
       strValue.Insert(iDecPositive, cSeperator);
       iMax++;
     }
@@ -1274,11 +1279,7 @@
     else
       cSeperator = '.';
 
-    int iDecPositive, iDecNegative;
-    iDecPositive = iDec2;
-    iDecNegative = iDec2;
-
-    for (iDecPositive = iDec2 - 3; iDecPositive > 0; iDecPositive -= 3) {
+    for (int iDecPositive = iDec2 - 3; iDecPositive > 0; iDecPositive -= 3) {
       strValue.Insert(iDecPositive, cSeperator);
       iMax++;
     }
diff --git a/fpdfsdk/src/javascript/global.cpp b/fpdfsdk/src/javascript/global.cpp
index 403cf58..cd0048d 100644
--- a/fpdfsdk/src/javascript/global.cpp
+++ b/fpdfsdk/src/javascript/global.cpp
@@ -7,7 +7,6 @@
 #include "global.h"
 
 #include "../../../core/include/fxcrt/fx_ext.h"
-#include "../../include/fpdfxfa/fpdfxfa_app.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "JS_Context.h"
 #include "JS_Define.h"