diff --git a/docshell/base/nsDSURIContentListener.cpp b/docshell/base/nsDSURIContentListener.cpp
index 0569bfc05b17..2b925bc3cef9 100644
--- a/docshell/base/nsDSURIContentListener.cpp
+++ b/docshell/base/nsDSURIContentListener.cpp
@@ -54,6 +54,16 @@ NS_INTERFACE_MAP_END
 // nsDSURIContentListener::nsIURIContentListener
 //*****************************************************************************   
 
+NS_IMETHODIMP nsDSURIContentListener::OnStartURIOpen(nsIURI* aURI, 
+   const char* aWindowTarget, PRBool* aAbortOpen)
+{
+   if(mParentContentListener)
+      return mParentContentListener->OnStartURIOpen(aURI, aWindowTarget, 
+         aAbortOpen);
+
+   return NS_OK;
+}
+
 NS_IMETHODIMP nsDSURIContentListener::GetProtocolHandler(nsIURI* aURI,
    nsIProtocolHandler** aProtocolHandler)
 {
diff --git a/gfx/src/nsImageNetContextAsync.cpp b/gfx/src/nsImageNetContextAsync.cpp
index 83c04a20dbdf..c679f95d89d3 100644
--- a/gfx/src/nsImageNetContextAsync.cpp
+++ b/gfx/src/nsImageNetContextAsync.cpp
@@ -176,6 +176,14 @@ NS_IMETHODIMP ImageConsumer::GetInterface(const nsIID & aIID, void * *aInstanceP
 }
 
 // nsIURIContentListener support
+
+NS_IMETHODIMP 
+ImageConsumer::OnStartURIOpen(nsIURI* aURI, 
+   const char* aWindowTarget, PRBool* aAbortOpen)
+{
+   return NS_OK;
+}
+
 NS_IMETHODIMP
 ImageConsumer::GetProtocolHandler(nsIURI *aURI, nsIProtocolHandler **aProtocolHandler)
 {