diff --git a/include/mshtmdid.h b/include/mshtmdid.h
index fe8520c..0d83945 100644
--- a/include/mshtmdid.h
+++ b/include/mshtmdid.h
@@ -252,6 +252,32 @@
 #define DISPID_A_VALUE                       (DISPID_A_FIRST+101)
 #define DISPID_A_CURSOR                      (DISPID_A_FIRST+102)
 
+#define DISPID_WINDOWOBJECT          (-5500)
+#define DISPID_LOCATIONOBJECT        (-5506)
+#define DISPID_HISTORYOBJECT         (-5507)
+#define DISPID_NAVIGATOROBJECT       (-5508)
+#define DISPID_SECURITYCTX           (-5511)
+#define DISPID_AMBIENT_DLCONTROL     (-5512)
+#define DISPID_AMBIENT_USERAGENT     (-5513)
+#define DISPID_SECURITYDOMAIN        (-5514)
+
+#define DLCTL_DLIMAGES               0x00000010
+#define DLCTL_VIDEOS                 0x00000020
+#define DLCTL_BGSOUNDS               0x00000040
+#define DLCTL_NO_SCRIPTS             0x00000080
+#define DLCTL_NO_JAVA                0x00000100
+#define DLCTL_NO_RUNACTIVEXCTLS      0x00000200
+#define DLCTL_NO_DLACTIVEXCTLS       0x00000400
+#define DLCTL_DOWNLOADONLY           0x00000800
+#define DLCTL_NO_FRAMEDOWNLOAD       0x00001000
+#define DLCTL_RESYNCHRONIZE          0x00002000
+#define DLCTL_PRAGMA_NO_CACHE        0x00004000
+#define DLCTL_FORCEOFFLINE           0x10000000
+#define DLCTL_NO_CLIENTPULL          0x20000000
+#define DLCTL_SILENT                 0x40000000
+#define DLCTL_OFFLINEIFNOTCONNECTED  0x80000000
+#define DLCTL_OFFLINE                DLCTL_OFFLINEIFNOTCONNECTED
+
 /* events */
 #define DISPID_EVPROP_ONMOUSEOVER          (DISPID_EVENTS+0)
 #define DISPID_EVPROP_ONMOUSEOUT           (DISPID_EVENTS+1)