--- l	Tue Nov 16 12:23:10 1999
+++ l2	Tue Nov 16 12:23:00 1999
@@ -1279,9 +1279,9 @@
 
 	if( XtIsRealized(t) && w != tw->tabs.hilight )
 	{
-	  if( tw->tabs.hilight != NULL )
+	  if( tw->tabs.hilight != NULL && XtIsRealized (tw->tabs.hilight))
 	    DrawHighlight(tw, tw->tabs.hilight, True) ;
-	  if( w != NULL )
+	  if( w != NULL && XtIsRealized (w))
 	    DrawHighlight(tw, w, False) ;
 	}