function openWindowinvite() {popupWin= window.open('invite.htm','invite','width=600,height=500,left=50,top=15,scrollbars=no,resizable=no')}
function openWindowregister() {popupWin= window.open('register.htm','register','width=600,height=500,left=50,top=15,scrollbars=no,resizable=no')}