function chat_open(){
window.open('https://chat.livechatinc.net/licence/1023634/open_chat.cgi?groups=0'+
'&s=1&lang=de&dc='+escape(document.cookie+';l='+document.location+';r='+
document.referer+';s='+typeof lc_session),'Czat_1023634',
'width=604,height=247,resizable=no,scrollbars=no,status=1');
}