Il meglio per tetto e parete jQuery(document).ready(function () { jQuery("#panel-r2 dl.level1 > dt:nth-of-type(1)").addClass("opened"); jQuery("#panel-r2 dl.level1 > dd:nth-of-type(1)").addClass("opened"); jQuery("#panel-r2 dl.level1 > dd:nth-of-type(1) > dl.level2 > dt:nth-of-type(2)").addClass("opened"); jQuery("#panel-r2 dl.level1 > dd:nth-of-type(1) > dl.level2 > dd:nth-of-type(2)").addClass("opened"); }); Breathable membranes and vapour control layers Ventilation, waterproofing, airtightness Elements for roof ventilation Under-ridge elements Accessories for ventilation Connections for chimneys [...]