From da1984d764cbd2c0caec7e242e108bc5c89cef08 Mon Sep 17 00:00:00 2001
From: crschmidt <crschmidt@crschmidt.net>
Date: Sat, 7 Oct 2006 19:26:31 +0000
Subject: [PATCH] Almost impossible to debug. element.offsets is cached (3x
 speedup -- a change made in the early days of openlayers) but the cache means
 that relative mouse positions are off if your first mouse event over the map
 is *after* the page is scrolled. This closes #333 , and fixes a long standing
 not-well understood bug.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@1692 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
---
 lib/OpenLayers/Events.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/OpenLayers/Events.js b/lib/OpenLayers/Events.js
index ef5bf53950..de38204103 100644
--- a/lib/OpenLayers/Events.js
+++ b/lib/OpenLayers/Events.js
@@ -319,6 +319,10 @@ OpenLayers.Events.prototype = {
     getMousePosition: function (evt) {
         if (!this.element.offsets) {
             this.element.offsets = OpenLayers.Util.pagePosition(this.element);
+            this.element.offsets[0] += (document.documentElement.scrollLeft
+                         || document.body.scrollLeft);
+            this.element.offsets[1] += (document.documentElement.scrollTop
+                         || document.body.scrollTop);
         }
         return new OpenLayers.Pixel(
             (evt.clientX + (document.documentElement.scrollLeft