jquery - slideToggle called twice in IE8 only -

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i have footer slides up/down when page bottom reached, problem is called twice in ie8 reason.

can force called once per page scroll?

$(window).scroll(function() {        if($(window).scrolltop() + $(window).height() == $(document).height()) {            // $('.footer .open').click();            $('#page-footer').slidetoggle();            console.log('log');        } });

try hope you

$(window).unbind('scroll').scroll(function() {        if($(window).scrolltop() + $(window).height() == $(document).height()) {            // $('.footer .open').click();            $('#page-footer').slidetoggle();            console.log('log');        } });

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