$(document).ready(function() {
    /** redimentionne la hauteur du block avant/apres **/
    var heightD = $('div#rightContent').height();
    if(heightD > '527'){
        var diff = heightD - 527;
        var total = 235 + diff;
        /*$('div#avant-apres').css('height',total+'px');*/
        $('div#avant-apres').attr('style','height:'+total+'px');
    }

});