Here's the toggle, but no saving... yet.

git-svn-id: https://develop.svn.wordpress.org/trunk@6578 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/js/post.js

@@ -52,6 +52,11 @@ function tag_press_key( e ) {
 	}
 }
 
+function add_postbox_toggles() {
+	jQuery('.postbox h3').prepend('<a class="togbox">+</a> ');
+	jQuery('.togbox').click( function() { jQuery(jQuery(this).parent().parent().get(0)).toggleClass('closed'); } );
+}
+
 addLoadEvent( function() {
 	jQuery('#tags-input').hide();
 	tag_update_quickclicks();
@@ -74,4 +79,5 @@ addLoadEvent( function() {
 
 	// auto-suggest stuff
 	jQuery('#newtag').suggest( 'admin-ajax.php?action=ajax-tag-search', { onSelect: tag_flush_to_text, delay: 500, minchars: 2 } );
+	add_postbox_toggles();
 });

wp-admin/wp-admin.css

@@ -1176,6 +1176,10 @@ a.view-comment-post-link {
 	color: black;
 }
 
+#poststuff h2 {
+	margin-bottom: 20px;
+}
+
 #poststuff h3 {
 	background: #eaf3fa;
 	font-size: 15px;
@@ -1242,3 +1246,33 @@ a.view-comment-post-link {
 	margin-top: 5px;
 }
 
+#poststuff .togbox {
+	background-color:#b2b2b2;
+	background-image:url(images/toggle-arrow.gif);
+	background-position:-10px 18px;
+	background-repeat:no-repeat;
+	display:block;
+	height:44px;
+	margin-left:-19px;
+	margin-top:-13px;
+	overflow:hidden;
+	position:absolute;
+	text-indent:-9999px;
+	width:12px;
+	-moz-border-radius-topleft: 2px;
+	-moz-border-radius-bottomleft: 3px;
+}
+
+#poststuff .closed .inside {
+	display: none;
+}
+
+#poststuff .closed h3 {
+	margin: 0;
+}
+
+#poststuff .closed .togbox {
+	background-color:#2583ad;
+	background-image:url(images/toggle-arrow.gif);
+	background-position: 5px 18px;
+}