IE error in calculating pageX/Y if missing and clientX/Y available.

Current code:

// Calculate pageX/Y if missing and clientX/Y available

if ( event.pageX == null && event.clientX != null ) {

var e = document.documentElement, b = document.body;

event.pageX = event.clientX + (e && e.scrollLeft || b.scrollLeft || 0);

event.pageY = event.clientY + (e && e.scrollTop || b.scrollTop || 0);

}

Fixed code:

// Calculate pageX/Y if missing and clientX/Y available

if ( event.pageX == null && event.clientX != null ) {

var e = document.documentElement, b = document.body;

event.pageX = (event && event.clientX || 0) + (e && e.scrollLeft || b && b.scrollLeft || 0);

event.pageY = (event && event.clientY || 0) + (e && e.scrollTop || b && b.scrollTop || 0);

}