diff --git a/src/event.js b/src/event.js
index 65700284..070ed9eb 100644
--- a/src/event.js
+++ b/src/event.js
@@ -267,8 +267,8 @@ jQuery.event = {
 		// Calculate pageX/Y if missing and clientX/Y available
 		if ( event.pageX == null && event.clientX != null ) {
 			var doc = document.documentElement, body = document.body;
-			event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0);
-			event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0);
+			event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc.clientLeft || 0);
+			event.pageY = event.clientY + (doc && doc.scrollTop  || body && body.scrollTop  || 0) - (doc.clientLeft || 0);
 		}
 			
 		// Add which for key events