--- a/Chest.cpp	Mon Mar 18 21:50:20 2013 +0000
+++ b/Chest.cpp	Tue Mar 19 21:53:21 2013 +0400
@@ -250,7 +250,7 @@
 }
 
 //----- (0042092D) --------------------------------------------------------
-void Chest::DrawChestUI(unsigned int uChestID)
+void Chest::DrawChestUI(signed int uChestID)
     {
 
     int chestBitmapId; // eax@1
@@ -315,7 +315,7 @@
 
 
 //----- (0041FE71) --------------------------------------------------------
-bool Chest::CanPlaceItemAt( signed int test_cell_position, int item_id, unsigned int uChestID )
+bool Chest::CanPlaceItemAt( signed int test_cell_position, int item_id, signed int uChestID )
     {
     int v3; // eax@1
     unsigned int item_texture_id; // eax@1
@@ -383,7 +383,7 @@
 // 506128: using guessed type int areWeLoadingTexture;
 
 //----- (0041FF64) --------------------------------------------------------
-int Chest::CountChestItems(unsigned int uChestID)
+int Chest::CountChestItems(signed int uChestID)
 {
   signed int item_count; // eax@1
   int max_items; // edx@1
@@ -409,7 +409,7 @@
 }
 
 //----- (0041FFA2) --------------------------------------------------------
-int Chest::PutItemInChest(int position, ItemGen *put_item, unsigned int uChestID)
+int Chest::PutItemInChest(int position, ItemGen *put_item, signed int uChestID)
 {
   int v3; // eax@1
   ItemGen *v4; // edi@1
@@ -516,7 +516,7 @@
 // 506128: using guessed type int areWeLoadingTexture;
 
 //----- (0042013E) --------------------------------------------------------
-void Chest::PlaceItemAt( unsigned int put_cell_pos, unsigned int item_at_cell, unsigned int uChestID )
+void Chest::PlaceItemAt( unsigned int put_cell_pos, unsigned int item_at_cell, signed int uChestID )
     {
 
     int uItemID; // edi@1
@@ -568,7 +568,7 @@
 // 506128: using guessed type int areWeLoadingTexture;
 
 //----- (00420284) --------------------------------------------------------
-void Chest::PlaceItems( unsigned int uChestID )
+void Chest::PlaceItems(signed int uChestID )
     {
     int uChestArea; // edi@1
     int random_chest_pos; // eax@2
@@ -622,6 +622,21 @@
     }
 // 420284: using guessed type char Dst[144];
 
+//----- (00448A17) --------------------------------------------------------
+void Chest::ToggleFlag(signed int uChestID, unsigned __int16 uFlag, unsigned int bToggle)
+    {
+    unsigned __int16 *pFlags; // eax@3
+
+    if ( uChestID >= 0 && uChestID <= 19 )
+        {
+        pFlags = &pChests[uChestID].uFlags;
+        if ( bToggle )
+            *pFlags |= uFlag;
+        else
+            *pFlags &= ~uFlag;
+        }
+    }
+
 //----- (00458B03) --------------------------------------------------------
 void ChestList::ToFile()
 {