function popup(url,name,width,height) {
    winleft = screen.width/2-width/2;
    wintop = screen.height/2-height/2;
    name=window.open(url,name,'resizable=no,width='+width+',height='+height+',top=0,left='+winleft+',top='+wintop+',toolbar=no,status=no,scrollbars=no')
  }
  
  function popup_6geil_chat(key) {
    width = 750;
    height = 500;
    winleft = screen.width/2-width/2;
    wintop = screen.height/2-height/2;
    popup_6geil_chat = window.open('_chat/?key='+key,'6geil_chat','resizable=no,width='+width+',height='+height+',top=0,left='+winleft+',top='+wintop+',toolbar=no,status=no,scrollbars=no')
  }