function csspopup() { // PopUp verstecken document.getElementById("popup").style.display = "none"; // Cookie setzen var expirationdate = new Date(); expirationdate = new Date(expirationdate.getTime() + 60*60*24*45); document.cookie = "PopUp=nomore;expires=" + expirationdate.toGMTString() + ";"; } function cookiecheck() { // Prüfen ob Cookie vorhanden if (document.cookie.search("PopUp=nomore") == -1) { // Nicht vorhanden, also PopUp anzeigen document.getElementById("popup").style.display = "block"; } }