jQuery.extend(jQuery.infinitescroll.prototype,{
   _nearbottom_local: function infscr_nearbottom_local() {
       var opts = this.options, instance = this,
           pixelsFromWindowBottomToBottom = infsrc_local_hiddenHeight(opts.binder)
               - jQuery(opts.binder).scrollTop() - jQuery(opts.binder).height();