REMOVE WARNING : event.layerX and event.layerY are broken and deprecated in WebKit. They will be removed from the engine in the near future.

Use the following code:

jQuery(function(){

    // remove layerX and layerY

    var all = jQuery.event.props,

        len = all.length,

        res = [];

    while (len--) {

      var el = all[len];

      if (el != 'layerX' && el != 'layerY') res.push(el);

    }

    jQuery.event.props = res;

}());