Index: screen_ops.c
===================================================================
--- screen_ops.c	(revision 51092)
+++ screen_ops.c	(working copy)
@@ -2856,7 +2856,43 @@
 	
 	/* api callbacks */
 	ot->exec = header_flip_exec;
+	ot->poll = ED_operator_areaactive;
+	ot->flag = 0;
+}
+
+/* ************** toggle header operator ***************************** */
+
+/* toggle a header region display */
+static int screen_header(bContext *C, wmOperator *UNUSED(op))
+{
+	ARegion *ar = CTX_wm_region(C);
 	
+	/* find the header region 
+	 *	- try context first, but upon failing, search all regions in area...
+	 */
+	if ((ar == NULL) || (ar->regiontype != RGN_TYPE_HEADER)) {
+		ScrArea *sa = CTX_wm_area(C);
+		ar = BKE_area_find_region_type(sa, RGN_TYPE_HEADER);
+
+		/* don't do anything if no region */
+		if (ar == NULL)
+			return OPERATOR_CANCELLED;
+	}
+
+	ED_region_toggle_hidden(C, ar);
+
+	WM_event_add_notifier(C, NC_SCREEN | NA_EDITED, NULL);
+
+	return OPERATOR_FINISHED;
+}
+
+void SCREEN_OT_header(wmOperatorType *ot)
+{
+	ot->name = "Toggle Header";
+	ot->description = "Toggles the header panel display";
+	ot->idname = "SCREEN_OT_header";
+
+	ot->exec = screen_header;
 	ot->poll = ED_operator_areaactive;
 	ot->flag = 0;
 }
@@ -2873,6 +2909,8 @@
 	else
 		uiItemO(layout, IFACE_("Flip to Top"), ICON_NONE, "SCREEN_OT_header_flip");
 
+	uiItemO(layout, IFACE_("Minimize"), ICON_NONE, "SCREEN_OT_header");
+
 	uiItemS(layout);
 
 	/* file browser should be fullscreen all the time, but other regions can be maximized/restored... */
@@ -3536,6 +3613,7 @@
 	WM_operatortype_append(SCREEN_OT_region_quadview);
 	WM_operatortype_append(SCREEN_OT_region_scale);
 	WM_operatortype_append(SCREEN_OT_region_flip);
+	WM_operatortype_append(SCREEN_OT_header);
 	WM_operatortype_append(SCREEN_OT_header_flip);
 	WM_operatortype_append(SCREEN_OT_header_toolbox);
 	WM_operatortype_append(SCREEN_OT_screen_set);