Murals: City × Wien Amstetten Eisenstadt Graz Innsbruck Klagenfurt Linz Linz: Mural Harbor Salzburg St. Pölten Villach Wr. Neustadt function openStreet(evt, cityStreet) { var i, tabcontentstreet, tablinks; tabcontentstreet = document.getElementsByClassName("tabcontentstreet"); for (i = 0; i < tabcontentstreet.length; i++) { tabcontentstreet[i].style.display = "none"; } tablinks = document.getElementsByClassName("tablinks"); for (i = 0; i < tablinks.length; i++) { tablinks[i].className = tablinks[i].className.replace(" active", ""); } document.getElementById(cityStreet).style.display = "block"; evt.currentTarget.className += " active"; } // Get the element with id="defaultOpen" and click on it document.getElementById("defaultOpen").click();