function openwindow(url,w,h,l,t)
  {
    window.open(url,'','width='+w+' height='+h+',location=0,menubar=0,resizable=1,scrollbars=1,status=0,titlebar=0,toolbar=0,screenX=0,left='+l+',screenY=0,top='+t+'');
  }
function email(emailadr)
  {
    openwindow('mail.php?a='+emailadr,450,550,20,20);
  }