? hover-in-delay.patch
Index: admin_menu.js
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/admin_menu/admin_menu.js,v
retrieving revision 1.7.2.8
diff -u -p -r1.7.2.8 admin_menu.js
--- admin_menu.js	4 Jul 2009 13:03:32 -0000	1.7.2.8
+++ admin_menu.js	18 Jul 2009 23:36:13 -0000
@@ -37,17 +37,41 @@ $(document).ready(function() {
 
   // Delayed mouseout.
   $('#admin-menu li').hover(function() {
-    // Stop the timer.
-    clearTimeout(this.sfTimer);
-    // Display child lists.
-    $('> ul', this).css({left: 'auto', display: 'block'})
-      // Immediately hide nephew lists.
-      .parent().siblings('li').children('ul').css({left: '-999em', display: 'none'});
+    // If we aren't already hovering, set the timer to make sure they
+    // *mean* to hover.
+    if (!this.hovering) {
+      var menu = this;
+      this.hoverInTimer = setTimeout(function() {
+        menu.hoverInTimer = 0;
+        menu.hovering = true;
+        // Display child lists.
+        $('> ul', menu).css({left: 'auto', display: 'block'})
+          // Immediately hide nephew lists.
+          .parent().siblings('li').children('ul').css({left: '-999em', display: 'none'});
+      }, 100);
+    }
+    else {
+      if (this.hoverOutTimer) {
+        // Stop the timer.
+        clearTimeout(this.hoverOutTimer);
+        this.hoverOutTimer = 0;
+      }
+    }
   }, function() {
-    // Start the timer.
-    var uls = $('> ul', this);
-    this.sfTimer = setTimeout(function() {
-      uls.css({left: '-999em', display: 'none'});
-    }, 400);
+    // If they started hovering and then went out before the timer
+    // expired, kill it.
+    if (this.hoverInTimer) {
+      clearTimeout(this.hoverInTimer);
+      this.hoverInTimer = 0;
+    }
+    else {
+      // Start the timer.
+      var uls = $('> ul', this);
+      var menu = this;
+      this.hoverOutTimer = setTimeout(function() {
+        menu.hovering = false;
+        uls.css({left: '-999em', display: 'none'});
+      }, 300);
+    }
   });
 });