diff --git a/LICENSE.txt b/LICENSE.txt
index 4d0065be..d18a0226 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -2,6 +2,10 @@ MochiKit is dual-licensed software.  It is available under the terms of the
 MIT License, or the Academic Free License version 2.1.  The full text of
 each license is included below.
 
+The MochiKit.Style.getElementPosition function is adapted from
+YAHOO.util.Dom.getXY v0.9.0. which is copyrighted by Yahoo! Inc. and
+licensed under the BSD license also reproduced in full below.
+
 MIT License
 ===========
 
@@ -65,5 +69,18 @@ e) to display the Original Work publicly.
 
 This license is Copyright (C) 2003-2004 Lawrence E. Rosen. All rights reserved. Permission is hereby granted to copy and distribute this license without modification. This license may not be modified without the express written permission of its copyright owner.
 
- 
 
+BSD License
+===========
+
+Copyright (c) 2006, Yahoo! Inc.
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this list of conditions and the
+      following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+    * Neither the name of Yahoo! Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission of Yahoo! Inc.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/MochiKit/Style.js b/MochiKit/Style.js
index 5c82325d..54903111 100644
--- a/MochiKit/Style.js
+++ b/MochiKit/Style.js
@@ -6,6 +6,9 @@ See <http://mochikit.com/> for documentation, downloads, license, etc.
 
 (c) 2005-2006 Bob Ippolito, Beau Hartshorne.  All rights Reserved.
 
+The MochiKit.Style.getElementPosition function is adapted from
+YAHOO.util.Dom.getXY v0.9.0. which is copyrighted by Yahoo! Inc.
+
 ***/
 
 MochiKit.Base.module(MochiKit, 'Style', '1.5', ['Base', 'DOM']);